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Finding the Fourth Proportional to 15,000.76, 22,501.74 and 5,639.80

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Solution

The fourth proportional to 15,000.76, 22,501.74 and 5,639.80 is: 8,459.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.76 : 22,501.74 = 5,639.80 : x
  2. Step 2: Convert to fraction form
    15,000.76/22,501.74 = 5,639.80/x
  3. Step 3: Cross multiply
    15,000.76x = 22,501.74 × 5,639.80
  4. Step 4: Simplify right side
    15,000.76x = 126,905,313.25
  5. Step 5: Solve for x
    x = 126,905,313.25/15,000.76
  6. Step 6: Final answer
    x = 8,459.93

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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.