Home / 15,585.60-21,508.26-8,870.90

Finding the Fourth Proportional to 15,585.60, 21,508.26 and 8,870.90

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Solution

The fourth proportional to 15,585.60, 21,508.26 and 8,870.90 is: 12,241.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.60 : 21,508.26 = 8,870.90 : x
  2. Step 2: Convert to fraction form
    15,585.60/21,508.26 = 8,870.90/x
  3. Step 3: Cross multiply
    15,585.60x = 21,508.26 × 8,870.90
  4. Step 4: Simplify right side
    15,585.60x = 190,797,623.63
  5. Step 5: Solve for x
    x = 190,797,623.63/15,585.60
  6. Step 6: Final answer
    x = 12,241.92

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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.