Home / 19,147.12-26,426.28-12,339.20

Finding the Fourth Proportional to 19,147.12, 26,426.28 and 12,339.20

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Solution

The fourth proportional to 19,147.12, 26,426.28 and 12,339.20 is: 17,030.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.12 : 26,426.28 = 12,339.20 : x
  2. Step 2: Convert to fraction form
    19,147.12/26,426.28 = 12,339.20/x
  3. Step 3: Cross multiply
    19,147.12x = 26,426.28 × 12,339.20
  4. Step 4: Simplify right side
    19,147.12x = 326,079,154.18
  5. Step 5: Solve for x
    x = 326,079,154.18/19,147.12
  6. Step 6: Final answer
    x = 17,030.19

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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.