Home / 10,583.60-15,875.90-8,731.28

Finding the Fourth Proportional to 10,583.60, 15,875.90 and 8,731.28

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Solution

The fourth proportional to 10,583.60, 15,875.90 and 8,731.28 is: 13,097.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,583.60 : 15,875.90 = 8,731.28 : x
  2. Step 2: Convert to fraction form
    10,583.60/15,875.90 = 8,731.28/x
  3. Step 3: Cross multiply
    10,583.60x = 15,875.90 × 8,731.28
  4. Step 4: Simplify right side
    10,583.60x = 138,616,884.50
  5. Step 5: Solve for x
    x = 138,616,884.50/10,583.60
  6. Step 6: Final answer
    x = 13,097.33

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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.