Home / 28,726.16-39,615.36-18,643.82

Finding the Fourth Proportional to 28,726.16, 39,615.36 and 18,643.82

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Solution

The fourth proportional to 28,726.16, 39,615.36 and 18,643.82 is: 25,711.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,726.16 : 39,615.36 = 18,643.82 : x
  2. Step 2: Convert to fraction form
    28,726.16/39,615.36 = 18,643.82/x
  3. Step 3: Cross multiply
    28,726.16x = 39,615.36 × 18,643.82
  4. Step 4: Simplify right side
    28,726.16x = 738,581,641.08
  5. Step 5: Solve for x
    x = 738,581,641.08/28,726.16
  6. Step 6: Final answer
    x = 25,711.12

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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.