Home / 21,730.60-32,595.90-18,879.40

Finding the Fourth Proportional to 21,730.60, 32,595.90 and 18,879.40

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Solution

The fourth proportional to 21,730.60, 32,595.90 and 18,879.40 is: 28,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,730.60 : 32,595.90 = 18,879.40 : x
  2. Step 2: Convert to fraction form
    21,730.60/32,595.90 = 18,879.40/x
  3. Step 3: Cross multiply
    21,730.60x = 32,595.90 × 18,879.40
  4. Step 4: Simplify right side
    21,730.60x = 615,391,034.46
  5. Step 5: Solve for x
    x = 615,391,034.46/21,730.60
  6. Step 6: Final answer
    x = 28,319.10

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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.