Home / 30,685.28-42,290.63-22,713.66

Finding the Fourth Proportional to 30,685.28, 42,290.63 and 22,713.66

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Solution

The fourth proportional to 30,685.28, 42,290.63 and 22,713.66 is: 31,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.28 : 42,290.63 = 22,713.66 : x
  2. Step 2: Convert to fraction form
    30,685.28/42,290.63 = 22,713.66/x
  3. Step 3: Cross multiply
    30,685.28x = 42,290.63 × 22,713.66
  4. Step 4: Simplify right side
    30,685.28x = 960,574,877.44
  5. Step 5: Solve for x
    x = 960,574,877.44/30,685.28
  6. Step 6: Final answer
    x = 31,304.10

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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.