Home / 38,929.64-53,717.52-21,931.04

Finding the Fourth Proportional to 38,929.64, 53,717.52 and 21,931.04

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Solution

The fourth proportional to 38,929.64, 53,717.52 and 21,931.04 is: 30,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,929.64 : 53,717.52 = 21,931.04 : x
  2. Step 2: Convert to fraction form
    38,929.64/53,717.52 = 21,931.04/x
  3. Step 3: Cross multiply
    38,929.64x = 53,717.52 × 21,931.04
  4. Step 4: Simplify right side
    38,929.64x = 1,178,081,079.82
  5. Step 5: Solve for x
    x = 1,178,081,079.82/38,929.64
  6. Step 6: Final answer
    x = 30,261.80

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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.