Home / 19,211.16-28,778.40-9,320.43

Finding the Fourth Proportional to 19,211.16, 28,778.40 and 9,320.43

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Solution

The fourth proportional to 19,211.16, 28,778.40 and 9,320.43 is: 13,962.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,211.16 : 28,778.40 = 9,320.43 : x
  2. Step 2: Convert to fraction form
    19,211.16/28,778.40 = 9,320.43/x
  3. Step 3: Cross multiply
    19,211.16x = 28,778.40 × 9,320.43
  4. Step 4: Simplify right side
    19,211.16x = 268,227,062.71
  5. Step 5: Solve for x
    x = 268,227,062.71/19,211.16
  6. Step 6: Final answer
    x = 13,962.04

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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.