Home / 19,643.28-29,472.35-9,118.35

Finding the Fourth Proportional to 19,643.28, 29,472.35 and 9,118.35

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Solution

The fourth proportional to 19,643.28, 29,472.35 and 9,118.35 is: 13,680.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.28 : 29,472.35 = 9,118.35 : x
  2. Step 2: Convert to fraction form
    19,643.28/29,472.35 = 9,118.35/x
  3. Step 3: Cross multiply
    19,643.28x = 29,472.35 × 9,118.35
  4. Step 4: Simplify right side
    19,643.28x = 268,739,157.03
  5. Step 5: Solve for x
    x = 268,739,157.03/19,643.28
  6. Step 6: Final answer
    x = 13,680.97

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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.