Home / 15,017.40-20,726.07-8,643.86

Finding the Fourth Proportional to 15,017.40, 20,726.07 and 8,643.86

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Solution

The fourth proportional to 15,017.40, 20,726.07 and 8,643.86 is: 11,929.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.40 : 20,726.07 = 8,643.86 : x
  2. Step 2: Convert to fraction form
    15,017.40/20,726.07 = 8,643.86/x
  3. Step 3: Cross multiply
    15,017.40x = 20,726.07 × 8,643.86
  4. Step 4: Simplify right side
    15,017.40x = 179,153,247.43
  5. Step 5: Solve for x
    x = 179,153,247.43/15,017.40
  6. Step 6: Final answer
    x = 11,929.71

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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.