Home / 18,461.56-27,648.18-10,128.76

Finding the Fourth Proportional to 18,461.56, 27,648.18 and 10,128.76

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Solution

The fourth proportional to 18,461.56, 27,648.18 and 10,128.76 is: 15,168.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.56 : 27,648.18 = 10,128.76 : x
  2. Step 2: Convert to fraction form
    18,461.56/27,648.18 = 10,128.76/x
  3. Step 3: Cross multiply
    18,461.56x = 27,648.18 × 10,128.76
  4. Step 4: Simplify right side
    18,461.56x = 280,041,779.66
  5. Step 5: Solve for x
    x = 280,041,779.66/18,461.56
  6. Step 6: Final answer
    x = 15,168.91

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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.