Home / 14,140.10-21,210.15-13,897.10

Finding the Fourth Proportional to 14,140.10, 21,210.15 and 13,897.10

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Solution

The fourth proportional to 14,140.10, 21,210.15 and 13,897.10 is: 20,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.10 : 21,210.15 = 13,897.10 : x
  2. Step 2: Convert to fraction form
    14,140.10/21,210.15 = 13,897.10/x
  3. Step 3: Cross multiply
    14,140.10x = 21,210.15 × 13,897.10
  4. Step 4: Simplify right side
    14,140.10x = 294,759,575.57
  5. Step 5: Solve for x
    x = 294,759,575.57/14,140.10
  6. Step 6: Final answer
    x = 20,845.65

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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.