Home / 21,789.48-30,070.62-16,475.16

Finding the Fourth Proportional to 21,789.48, 30,070.62 and 16,475.16

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Solution

The fourth proportional to 21,789.48, 30,070.62 and 16,475.16 is: 22,736.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.48 : 30,070.62 = 16,475.16 : x
  2. Step 2: Convert to fraction form
    21,789.48/30,070.62 = 16,475.16/x
  3. Step 3: Cross multiply
    21,789.48x = 30,070.62 × 16,475.16
  4. Step 4: Simplify right side
    21,789.48x = 495,418,275.80
  5. Step 5: Solve for x
    x = 495,418,275.80/21,789.48
  6. Step 6: Final answer
    x = 22,736.58

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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.