Home / 10,389.46-15,654.31-8,581.08

Finding the Fourth Proportional to 10,389.46, 15,654.31 and 8,581.08

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Solution

The fourth proportional to 10,389.46, 15,654.31 and 8,581.08 is: 12,929.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.46 : 15,654.31 = 8,581.08 : x
  2. Step 2: Convert to fraction form
    10,389.46/15,654.31 = 8,581.08/x
  3. Step 3: Cross multiply
    10,389.46x = 15,654.31 × 8,581.08
  4. Step 4: Simplify right side
    10,389.46x = 134,330,886.45
  5. Step 5: Solve for x
    x = 134,330,886.45/10,389.46
  6. Step 6: Final answer
    x = 12,929.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.