Home / 19,242.15-28,811.09-9,988.71

Finding the Fourth Proportional to 19,242.15, 28,811.09 and 9,988.71

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Solution

The fourth proportional to 19,242.15, 28,811.09 and 9,988.71 is: 14,956.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,242.15 : 28,811.09 = 9,988.71 : x
  2. Step 2: Convert to fraction form
    19,242.15/28,811.09 = 9,988.71/x
  3. Step 3: Cross multiply
    19,242.15x = 28,811.09 × 9,988.71
  4. Step 4: Simplify right side
    19,242.15x = 287,785,572.85
  5. Step 5: Solve for x
    x = 287,785,572.85/19,242.15
  6. Step 6: Final answer
    x = 14,956.00

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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.