Home / 21,854.91-30,159.47-12,294.08

Finding the Fourth Proportional to 21,854.91, 30,159.47 and 12,294.08

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Solution

The fourth proportional to 21,854.91, 30,159.47 and 12,294.08 is: 16,965.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854.91 : 30,159.47 = 12,294.08 : x
  2. Step 2: Convert to fraction form
    21,854.91/30,159.47 = 12,294.08/x
  3. Step 3: Cross multiply
    21,854.91x = 30,159.47 × 12,294.08
  4. Step 4: Simplify right side
    21,854.91x = 370,782,724.67
  5. Step 5: Solve for x
    x = 370,782,724.67/21,854.91
  6. Step 6: Final answer
    x = 16,965.65

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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.