Home / 42,002.60-63,009.30-20,953.40

Finding the Fourth Proportional to 42,002.60, 63,009.30 and 20,953.40

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Solution

The fourth proportional to 42,002.60, 63,009.30 and 20,953.40 is: 31,432.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,002.60 : 63,009.30 = 20,953.40 : x
  2. Step 2: Convert to fraction form
    42,002.60/63,009.30 = 20,953.40/x
  3. Step 3: Cross multiply
    42,002.60x = 63,009.30 × 20,953.40
  4. Step 4: Simplify right side
    42,002.60x = 1,320,259,066.62
  5. Step 5: Solve for x
    x = 1,320,259,066.62/42,002.60
  6. Step 6: Final answer
    x = 31,432.79

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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.