Home / 28,117.79-38,803.73-16,181.18

Finding the Fourth Proportional to 28,117.79, 38,803.73 and 16,181.18

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Solution

The fourth proportional to 28,117.79, 38,803.73 and 16,181.18 is: 22,330.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.79 : 38,803.73 = 16,181.18 : x
  2. Step 2: Convert to fraction form
    28,117.79/38,803.73 = 16,181.18/x
  3. Step 3: Cross multiply
    28,117.79x = 38,803.73 × 16,181.18
  4. Step 4: Simplify right side
    28,117.79x = 627,890,139.80
  5. Step 5: Solve for x
    x = 627,890,139.80/28,117.79
  6. Step 6: Final answer
    x = 22,330.71

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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.