Home / 15,498.19-21,387.53-8,424.59

Finding the Fourth Proportional to 15,498.19, 21,387.53 and 8,424.59

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Solution

The fourth proportional to 15,498.19, 21,387.53 and 8,424.59 is: 11,625.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.19 : 21,387.53 = 8,424.59 : x
  2. Step 2: Convert to fraction form
    15,498.19/21,387.53 = 8,424.59/x
  3. Step 3: Cross multiply
    15,498.19x = 21,387.53 × 8,424.59
  4. Step 4: Simplify right side
    15,498.19x = 180,181,171.36
  5. Step 5: Solve for x
    x = 180,181,171.36/15,498.19
  6. Step 6: Final answer
    x = 11,625.95

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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.