Home / 13,442.64-18,545.04-8,398.08

Finding the Fourth Proportional to 13,442.64, 18,545.04 and 8,398.08

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Solution

The fourth proportional to 13,442.64, 18,545.04 and 8,398.08 is: 11,585.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.64 : 18,545.04 = 8,398.08 : x
  2. Step 2: Convert to fraction form
    13,442.64/18,545.04 = 8,398.08/x
  3. Step 3: Cross multiply
    13,442.64x = 18,545.04 × 8,398.08
  4. Step 4: Simplify right side
    13,442.64x = 155,742,729.52
  5. Step 5: Solve for x
    x = 155,742,729.52/13,442.64
  6. Step 6: Final answer
    x = 11,585.72

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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.