Home / 28,180.23-38,889.15-15,433.17

Finding the Fourth Proportional to 28,180.23, 38,889.15 and 15,433.17

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Solution

The fourth proportional to 28,180.23, 38,889.15 and 15,433.17 is: 21,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.23 : 38,889.15 = 15,433.17 : x
  2. Step 2: Convert to fraction form
    28,180.23/38,889.15 = 15,433.17/x
  3. Step 3: Cross multiply
    28,180.23x = 38,889.15 × 15,433.17
  4. Step 4: Simplify right side
    28,180.23x = 600,182,863.11
  5. Step 5: Solve for x
    x = 600,182,863.11/28,180.23
  6. Step 6: Final answer
    x = 21,298.01

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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.