Home / 13,148.63-18,145.11-8,432.91

Finding the Fourth Proportional to 13,148.63, 18,145.11 and 8,432.91

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Solution

The fourth proportional to 13,148.63, 18,145.11 and 8,432.91 is: 11,637.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.63 : 18,145.11 = 8,432.91 : x
  2. Step 2: Convert to fraction form
    13,148.63/18,145.11 = 8,432.91/x
  3. Step 3: Cross multiply
    13,148.63x = 18,145.11 × 8,432.91
  4. Step 4: Simplify right side
    13,148.63x = 153,016,079.57
  5. Step 5: Solve for x
    x = 153,016,079.57/13,148.63
  6. Step 6: Final answer
    x = 11,637.42

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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.