Home / 42,275.80-63,383.66-21,200.64

Finding the Fourth Proportional to 42,275.80, 63,383.66 and 21,200.64

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Solution

The fourth proportional to 42,275.80, 63,383.66 and 21,200.64 is: 31,785.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,275.80 : 63,383.66 = 21,200.64 : x
  2. Step 2: Convert to fraction form
    42,275.80/63,383.66 = 21,200.64/x
  3. Step 3: Cross multiply
    42,275.80x = 63,383.66 × 21,200.64
  4. Step 4: Simplify right side
    42,275.80x = 1,343,774,012.61
  5. Step 5: Solve for x
    x = 1,343,774,012.61/42,275.80
  6. Step 6: Final answer
    x = 31,785.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.