Home / 15,278.66-21,084.47-8,564.29

Finding the Fourth Proportional to 15,278.66, 21,084.47 and 8,564.29

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Solution

The fourth proportional to 15,278.66, 21,084.47 and 8,564.29 is: 11,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.66 : 21,084.47 = 8,564.29 : x
  2. Step 2: Convert to fraction form
    15,278.66/21,084.47 = 8,564.29/x
  3. Step 3: Cross multiply
    15,278.66x = 21,084.47 × 8,564.29
  4. Step 4: Simplify right side
    15,278.66x = 180,573,484.28
  5. Step 5: Solve for x
    x = 180,573,484.28/15,278.66
  6. Step 6: Final answer
    x = 11,818.68

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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.