Home / 38,653.17-57,931.20-20,883.12

Finding the Fourth Proportional to 38,653.17, 57,931.20 and 20,883.12

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Solution

The fourth proportional to 38,653.17, 57,931.20 and 20,883.12 is: 31,298.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,653.17 : 57,931.20 = 20,883.12 : x
  2. Step 2: Convert to fraction form
    38,653.17/57,931.20 = 20,883.12/x
  3. Step 3: Cross multiply
    38,653.17x = 57,931.20 × 20,883.12
  4. Step 4: Simplify right side
    38,653.17x = 1,209,784,201.34
  5. Step 5: Solve for x
    x = 1,209,784,201.34/38,653.17
  6. Step 6: Final answer
    x = 31,298.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.