Home / 22,929.48-31,642.70-12,721.20

Finding the Fourth Proportional to 22,929.48, 31,642.70 and 12,721.20

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Solution

The fourth proportional to 22,929.48, 31,642.70 and 12,721.20 is: 17,555.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,929.48 : 31,642.70 = 12,721.20 : x
  2. Step 2: Convert to fraction form
    22,929.48/31,642.70 = 12,721.20/x
  3. Step 3: Cross multiply
    22,929.48x = 31,642.70 × 12,721.20
  4. Step 4: Simplify right side
    22,929.48x = 402,533,182.52
  5. Step 5: Solve for x
    x = 402,533,182.52/22,929.48
  6. Step 6: Final answer
    x = 17,555.27

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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.