Home / 13,265.60-19,886.64-8,589.20

Finding the Fourth Proportional to 13,265.60, 19,886.64 and 8,589.20

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Solution

The fourth proportional to 13,265.60, 19,886.64 and 8,589.20 is: 12,876.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,265.60 : 19,886.64 = 8,589.20 : x
  2. Step 2: Convert to fraction form
    13,265.60/19,886.64 = 8,589.20/x
  3. Step 3: Cross multiply
    13,265.60x = 19,886.64 × 8,589.20
  4. Step 4: Simplify right side
    13,265.60x = 170,810,328.29
  5. Step 5: Solve for x
    x = 170,810,328.29/13,265.60
  6. Step 6: Final answer
    x = 12,876.19

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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.