Home / 21,377.79-29,509.45-16,087.95

Finding the Fourth Proportional to 21,377.79, 29,509.45 and 16,087.95

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Solution

The fourth proportional to 21,377.79, 29,509.45 and 16,087.95 is: 22,207.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.79 : 29,509.45 = 16,087.95 : x
  2. Step 2: Convert to fraction form
    21,377.79/29,509.45 = 16,087.95/x
  3. Step 3: Cross multiply
    21,377.79x = 29,509.45 × 16,087.95
  4. Step 4: Simplify right side
    21,377.79x = 474,746,515.91
  5. Step 5: Solve for x
    x = 474,746,515.91/21,377.79
  6. Step 6: Final answer
    x = 22,207.46

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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.