Home / 19,428.17-26,815.28-13,756.95

Finding the Fourth Proportional to 19,428.17, 26,815.28 and 13,756.95

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Solution

The fourth proportional to 19,428.17, 26,815.28 and 13,756.95 is: 18,987.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,428.17 : 26,815.28 = 13,756.95 : x
  2. Step 2: Convert to fraction form
    19,428.17/26,815.28 = 13,756.95/x
  3. Step 3: Cross multiply
    19,428.17x = 26,815.28 × 13,756.95
  4. Step 4: Simplify right side
    19,428.17x = 368,896,397.41
  5. Step 5: Solve for x
    x = 368,896,397.41/19,428.17
  6. Step 6: Final answer
    x = 18,987.71

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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.