Home / 28,011.50-42,002.40-8,287.34

Finding the Fourth Proportional to 28,011.50, 42,002.40 and 8,287.34

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Solution

The fourth proportional to 28,011.50, 42,002.40 and 8,287.34 is: 12,426.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.50 : 42,002.40 = 8,287.34 : x
  2. Step 2: Convert to fraction form
    28,011.50/42,002.40 = 8,287.34/x
  3. Step 3: Cross multiply
    28,011.50x = 42,002.40 × 8,287.34
  4. Step 4: Simplify right side
    28,011.50x = 348,088,169.62
  5. Step 5: Solve for x
    x = 348,088,169.62/28,011.50
  6. Step 6: Final answer
    x = 12,426.62

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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.