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Finding the Fourth Proportional to 28,235.60, 42,342.64 and 9,510.61

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Solution

The fourth proportional to 28,235.60, 42,342.64 and 9,510.61 is: 14,262.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.60 : 42,342.64 = 9,510.61 : x
  2. Step 2: Convert to fraction form
    28,235.60/42,342.64 = 9,510.61/x
  3. Step 3: Cross multiply
    28,235.60x = 42,342.64 × 9,510.61
  4. Step 4: Simplify right side
    28,235.60x = 402,704,335.41
  5. Step 5: Solve for x
    x = 402,704,335.41/28,235.60
  6. Step 6: Final answer
    x = 14,262.29

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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.