Home / 19,643.40-29,472.39-9,118.62

Finding the Fourth Proportional to 19,643.40, 29,472.39 and 9,118.62

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Solution

The fourth proportional to 19,643.40, 29,472.39 and 9,118.62 is: 13,681.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.40 : 29,472.39 = 9,118.62 : x
  2. Step 2: Convert to fraction form
    19,643.40/29,472.39 = 9,118.62/x
  3. Step 3: Cross multiply
    19,643.40x = 29,472.39 × 9,118.62
  4. Step 4: Simplify right side
    19,643.40x = 268,747,524.90
  5. Step 5: Solve for x
    x = 268,747,524.90/19,643.40
  6. Step 6: Final answer
    x = 13,681.31

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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.