Home / 15,126.77-20,873.35-8,411.31

Finding the Fourth Proportional to 15,126.77, 20,873.35 and 8,411.31

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Solution

The fourth proportional to 15,126.77, 20,873.35 and 8,411.31 is: 11,606.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.77 : 20,873.35 = 8,411.31 : x
  2. Step 2: Convert to fraction form
    15,126.77/20,873.35 = 8,411.31/x
  3. Step 3: Cross multiply
    15,126.77x = 20,873.35 × 8,411.31
  4. Step 4: Simplify right side
    15,126.77x = 175,572,217.59
  5. Step 5: Solve for x
    x = 175,572,217.59/15,126.77
  6. Step 6: Final answer
    x = 11,606.72

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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.