Home / 38,931.03-53,725.17-21,935.31

Finding the Fourth Proportional to 38,931.03, 53,725.17 and 21,935.31

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Solution

The fourth proportional to 38,931.03, 53,725.17 and 21,935.31 is: 30,270.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,931.03 : 53,725.17 = 21,935.31 : x
  2. Step 2: Convert to fraction form
    38,931.03/53,725.17 = 21,935.31/x
  3. Step 3: Cross multiply
    38,931.03x = 53,725.17 × 21,935.31
  4. Step 4: Simplify right side
    38,931.03x = 1,178,478,139.54
  5. Step 5: Solve for x
    x = 1,178,478,139.54/38,931.03
  6. Step 6: Final answer
    x = 30,270.92

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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.