Home / 20,407.01-28,154.43-13,337.51

Finding the Fourth Proportional to 20,407.01, 28,154.43 and 13,337.51

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Solution

The fourth proportional to 20,407.01, 28,154.43 and 13,337.51 is: 18,401.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.01 : 28,154.43 = 13,337.51 : x
  2. Step 2: Convert to fraction form
    20,407.01/28,154.43 = 13,337.51/x
  3. Step 3: Cross multiply
    20,407.01x = 28,154.43 × 13,337.51
  4. Step 4: Simplify right side
    20,407.01x = 375,509,850.90
  5. Step 5: Solve for x
    x = 375,509,850.90/20,407.01
  6. Step 6: Final answer
    x = 18,401.03

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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.