Home / 28,281.60-42,446.70-12,510.90

Finding the Fourth Proportional to 28,281.60, 42,446.70 and 12,510.90

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Solution

The fourth proportional to 28,281.60, 42,446.70 and 12,510.90 is: 18,777.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.60 : 42,446.70 = 12,510.90 : x
  2. Step 2: Convert to fraction form
    28,281.60/42,446.70 = 12,510.90/x
  3. Step 3: Cross multiply
    28,281.60x = 42,446.70 × 12,510.90
  4. Step 4: Simplify right side
    28,281.60x = 531,046,419.03
  5. Step 5: Solve for x
    x = 531,046,419.03/28,281.60
  6. Step 6: Final answer
    x = 18,777.10

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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.