Home / 20,726.17-28,603.28-15,681.63

Finding the Fourth Proportional to 20,726.17, 28,603.28 and 15,681.63

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Solution

The fourth proportional to 20,726.17, 28,603.28 and 15,681.63 is: 21,641.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.17 : 28,603.28 = 15,681.63 : x
  2. Step 2: Convert to fraction form
    20,726.17/28,603.28 = 15,681.63/x
  3. Step 3: Cross multiply
    20,726.17x = 28,603.28 × 15,681.63
  4. Step 4: Simplify right side
    20,726.17x = 448,546,184.06
  5. Step 5: Solve for x
    x = 448,546,184.06/20,726.17
  6. Step 6: Final answer
    x = 21,641.54

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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.