Home / 15,371.95-21,205.63-9,393.20

Finding the Fourth Proportional to 15,371.95, 21,205.63 and 9,393.20

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Solution

The fourth proportional to 15,371.95, 21,205.63 and 9,393.20 is: 12,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.95 : 21,205.63 = 9,393.20 : x
  2. Step 2: Convert to fraction form
    15,371.95/21,205.63 = 9,393.20/x
  3. Step 3: Cross multiply
    15,371.95x = 21,205.63 × 9,393.20
  4. Step 4: Simplify right side
    15,371.95x = 199,188,723.72
  5. Step 5: Solve for x
    x = 199,188,723.72/15,371.95
  6. Step 6: Final answer
    x = 12,957.93

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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.