Home / 14,712.18-21,929.69-13,531.20

Finding the Fourth Proportional to 14,712.18, 21,929.69 and 13,531.20

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Solution

The fourth proportional to 14,712.18, 21,929.69 and 13,531.20 is: 20,169.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,712.18 : 21,929.69 = 13,531.20 : x
  2. Step 2: Convert to fraction form
    14,712.18/21,929.69 = 13,531.20/x
  3. Step 3: Cross multiply
    14,712.18x = 21,929.69 × 13,531.20
  4. Step 4: Simplify right side
    14,712.18x = 296,734,953.67
  5. Step 5: Solve for x
    x = 296,734,953.67/14,712.18
  6. Step 6: Final answer
    x = 20,169.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.