Home / 20,070.18-27,688.11-14,105.74

Finding the Fourth Proportional to 20,070.18, 27,688.11 and 14,105.74

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Solution

The fourth proportional to 20,070.18, 27,688.11 and 14,105.74 is: 19,459.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.18 : 27,688.11 = 14,105.74 : x
  2. Step 2: Convert to fraction form
    20,070.18/27,688.11 = 14,105.74/x
  3. Step 3: Cross multiply
    20,070.18x = 27,688.11 × 14,105.74
  4. Step 4: Simplify right side
    20,070.18x = 390,561,280.75
  5. Step 5: Solve for x
    x = 390,561,280.75/20,070.18
  6. Step 6: Final answer
    x = 19,459.78

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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.