Home / 13,140.40-19,710.76-8,726.32

Finding the Fourth Proportional to 13,140.40, 19,710.76 and 8,726.32

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Solution

The fourth proportional to 13,140.40, 19,710.76 and 8,726.32 is: 13,089.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.40 : 19,710.76 = 8,726.32 : x
  2. Step 2: Convert to fraction form
    13,140.40/19,710.76 = 8,726.32/x
  3. Step 3: Cross multiply
    13,140.40x = 19,710.76 × 8,726.32
  4. Step 4: Simplify right side
    13,140.40x = 172,002,399.20
  5. Step 5: Solve for x
    x = 172,002,399.20/13,140.40
  6. Step 6: Final answer
    x = 13,089.59

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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.