Home / 34,428.60-47,520.78-20,285.88

Finding the Fourth Proportional to 34,428.60, 47,520.78 and 20,285.88

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Solution

The fourth proportional to 34,428.60, 47,520.78 and 20,285.88 is: 28,000.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,428.60 : 47,520.78 = 20,285.88 : x
  2. Step 2: Convert to fraction form
    34,428.60/47,520.78 = 20,285.88/x
  3. Step 3: Cross multiply
    34,428.60x = 47,520.78 × 20,285.88
  4. Step 4: Simplify right side
    34,428.60x = 964,000,840.59
  5. Step 5: Solve for x
    x = 964,000,840.59/34,428.60
  6. Step 6: Final answer
    x = 28,000.00

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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.