Home / 14,877.72-20,535-10,105.74

Finding the Fourth Proportional to 14,877.72, 20,535 and 10,105.74

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Solution

The fourth proportional to 14,877.72, 20,535 and 10,105.74 is: 13,948.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,877.72 : 20,535 = 10,105.74 : x
  2. Step 2: Convert to fraction form
    14,877.72/20,535 = 10,105.74/x
  3. Step 3: Cross multiply
    14,877.72x = 20,535 × 10,105.74
  4. Step 4: Simplify right side
    14,877.72x = 207,521,370.90
  5. Step 5: Solve for x
    x = 207,521,370.90/14,877.72
  6. Step 6: Final answer
    x = 13,948.47

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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.