Home / 14,145.50-21,218.36-4,285.51

Finding the Fourth Proportional to 14,145.50, 21,218.36 and 4,285.51

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Solution

The fourth proportional to 14,145.50, 21,218.36 and 4,285.51 is: 6,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.50 : 21,218.36 = 4,285.51 : x
  2. Step 2: Convert to fraction form
    14,145.50/21,218.36 = 4,285.51/x
  3. Step 3: Cross multiply
    14,145.50x = 21,218.36 × 4,285.51
  4. Step 4: Simplify right side
    14,145.50x = 90,931,419.49
  5. Step 5: Solve for x
    x = 90,931,419.49/14,145.50
  6. Step 6: Final answer
    x = 6,428.29

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Half scale
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Double scale
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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.