Home / 15,278.49-21,084.66-8,563.77

Finding the Fourth Proportional to 15,278.49, 21,084.66 and 8,563.77

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Solution

The fourth proportional to 15,278.49, 21,084.66 and 8,563.77 is: 11,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,278.49 : 21,084.66 = 8,563.77 : x
  2. Step 2: Convert to fraction form
    15,278.49/21,084.66 = 8,563.77/x
  3. Step 3: Cross multiply
    15,278.49x = 21,084.66 × 8,563.77
  4. Step 4: Simplify right side
    15,278.49x = 180,564,178.77
  5. Step 5: Solve for x
    x = 180,564,178.77/15,278.49
  6. Step 6: Final answer
    x = 11,818.20

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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.