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Finding the Fourth Proportional to 15,424.99, 23,143.65 and 9,187.99

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Solution

The fourth proportional to 15,424.99, 23,143.65 and 9,187.99 is: 13,785.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.99 : 23,143.65 = 9,187.99 : x
  2. Step 2: Convert to fraction form
    15,424.99/23,143.65 = 9,187.99/x
  3. Step 3: Cross multiply
    15,424.99x = 23,143.65 × 9,187.99
  4. Step 4: Simplify right side
    15,424.99x = 212,643,624.76
  5. Step 5: Solve for x
    x = 212,643,624.76/15,424.99
  6. Step 6: Final answer
    x = 13,785.66

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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.