Home / 15,884.66-21,943.65-12,693.78

Finding the Fourth Proportional to 15,884.66, 21,943.65 and 12,693.78

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Solution

The fourth proportional to 15,884.66, 21,943.65 and 12,693.78 is: 17,535.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,884.66 : 21,943.65 = 12,693.78 : x
  2. Step 2: Convert to fraction form
    15,884.66/21,943.65 = 12,693.78/x
  3. Step 3: Cross multiply
    15,884.66x = 21,943.65 × 12,693.78
  4. Step 4: Simplify right side
    15,884.66x = 278,547,823.85
  5. Step 5: Solve for x
    x = 278,547,823.85/15,884.66
  6. Step 6: Final answer
    x = 17,535.65

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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.