Home / 18,934.60-28,442.40-11,543.08

Finding the Fourth Proportional to 18,934.60, 28,442.40 and 11,543.08

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Solution

The fourth proportional to 18,934.60, 28,442.40 and 11,543.08 is: 17,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,934.60 : 28,442.40 = 11,543.08 : x
  2. Step 2: Convert to fraction form
    18,934.60/28,442.40 = 11,543.08/x
  3. Step 3: Cross multiply
    18,934.60x = 28,442.40 × 11,543.08
  4. Step 4: Simplify right side
    18,934.60x = 328,312,898.59
  5. Step 5: Solve for x
    x = 328,312,898.59/18,934.60
  6. Step 6: Final answer
    x = 17,339.31

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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.