Home / 13,397.09-18,487.01-7,428.93

Finding the Fourth Proportional to 13,397.09, 18,487.01 and 7,428.93

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Solution

The fourth proportional to 13,397.09, 18,487.01 and 7,428.93 is: 10,251.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.09 : 18,487.01 = 7,428.93 : x
  2. Step 2: Convert to fraction form
    13,397.09/18,487.01 = 7,428.93/x
  3. Step 3: Cross multiply
    13,397.09x = 18,487.01 × 7,428.93
  4. Step 4: Simplify right side
    13,397.09x = 137,338,666.05
  5. Step 5: Solve for x
    x = 137,338,666.05/13,397.09
  6. Step 6: Final answer
    x = 10,251.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.