Home / 14,049.15-19,387.02-8,390.28

Finding the Fourth Proportional to 14,049.15, 19,387.02 and 8,390.28

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Solution

The fourth proportional to 14,049.15, 19,387.02 and 8,390.28 is: 11,578.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,049.15 : 19,387.02 = 8,390.28 : x
  2. Step 2: Convert to fraction form
    14,049.15/19,387.02 = 8,390.28/x
  3. Step 3: Cross multiply
    14,049.15x = 19,387.02 × 8,390.28
  4. Step 4: Simplify right side
    14,049.15x = 162,662,526.17
  5. Step 5: Solve for x
    x = 162,662,526.17/14,049.15
  6. Step 6: Final answer
    x = 11,578.10

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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.