Home / 15,133.47-20,883.87-8,418.95

Finding the Fourth Proportional to 15,133.47, 20,883.87 and 8,418.95

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Solution

The fourth proportional to 15,133.47, 20,883.87 and 8,418.95 is: 11,617.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.47 : 20,883.87 = 8,418.95 : x
  2. Step 2: Convert to fraction form
    15,133.47/20,883.87 = 8,418.95/x
  3. Step 3: Cross multiply
    15,133.47x = 20,883.87 × 8,418.95
  4. Step 4: Simplify right side
    15,133.47x = 175,820,341.12
  5. Step 5: Solve for x
    x = 175,820,341.12/15,133.47
  6. Step 6: Final answer
    x = 11,617.98

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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.