Home / 10,086.10-15,129.65-2,690.63

Finding the Fourth Proportional to 10,086.10, 15,129.65 and 2,690.63

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Solution

The fourth proportional to 10,086.10, 15,129.65 and 2,690.63 is: 4,036.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.10 : 15,129.65 = 2,690.63 : x
  2. Step 2: Convert to fraction form
    10,086.10/15,129.65 = 2,690.63/x
  3. Step 3: Cross multiply
    10,086.10x = 15,129.65 × 2,690.63
  4. Step 4: Simplify right side
    10,086.10x = 40,708,290.18
  5. Step 5: Solve for x
    x = 40,708,290.18/10,086.10
  6. Step 6: Final answer
    x = 4,036.08

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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.