Home / 30,860.24-42,587.92-18,930.16

Finding the Fourth Proportional to 30,860.24, 42,587.92 and 18,930.16

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Solution

The fourth proportional to 30,860.24, 42,587.92 and 18,930.16 is: 26,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,860.24 : 42,587.92 = 18,930.16 : x
  2. Step 2: Convert to fraction form
    30,860.24/42,587.92 = 18,930.16/x
  3. Step 3: Cross multiply
    30,860.24x = 42,587.92 × 18,930.16
  4. Step 4: Simplify right side
    30,860.24x = 806,196,139.67
  5. Step 5: Solve for x
    x = 806,196,139.67/30,860.24
  6. Step 6: Final answer
    x = 26,124.10

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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.