Home / 14,140.50-21,210.76-4,279.56

Finding the Fourth Proportional to 14,140.50, 21,210.76 and 4,279.56

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Solution

The fourth proportional to 14,140.50, 21,210.76 and 4,279.56 is: 6,419.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.50 : 21,210.76 = 4,279.56 : x
  2. Step 2: Convert to fraction form
    14,140.50/21,210.76 = 4,279.56/x
  3. Step 3: Cross multiply
    14,140.50x = 21,210.76 × 4,279.56
  4. Step 4: Simplify right side
    14,140.50x = 90,772,720.07
  5. Step 5: Solve for x
    x = 90,772,720.07/14,140.50
  6. Step 6: Final answer
    x = 6,419.34

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.