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Finding the Fourth Proportional to 14,295.62, 19,737.78 and 8,920.19

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Solution

The fourth proportional to 14,295.62, 19,737.78 and 8,920.19 is: 12,315.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,295.62 : 19,737.78 = 8,920.19 : x
  2. Step 2: Convert to fraction form
    14,295.62/19,737.78 = 8,920.19/x
  3. Step 3: Cross multiply
    14,295.62x = 19,737.78 × 8,920.19
  4. Step 4: Simplify right side
    14,295.62x = 176,064,747.78
  5. Step 5: Solve for x
    x = 176,064,747.78/14,295.62
  6. Step 6: Final answer
    x = 12,315.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.