Home / 30,886.12-42,605.22-18,306.28

Finding the Fourth Proportional to 30,886.12, 42,605.22 and 18,306.28

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Solution

The fourth proportional to 30,886.12, 42,605.22 and 18,306.28 is: 25,252.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,886.12 : 42,605.22 = 18,306.28 : x
  2. Step 2: Convert to fraction form
    30,886.12/42,605.22 = 18,306.28/x
  3. Step 3: Cross multiply
    30,886.12x = 42,605.22 × 18,306.28
  4. Step 4: Simplify right side
    30,886.12x = 779,943,086.78
  5. Step 5: Solve for x
    x = 779,943,086.78/30,886.12
  6. Step 6: Final answer
    x = 25,252.22

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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.