Home / 15,242.76-21,034.86-8,528.40

Finding the Fourth Proportional to 15,242.76, 21,034.86 and 8,528.40

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Solution

The fourth proportional to 15,242.76, 21,034.86 and 8,528.40 is: 11,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,242.76 : 21,034.86 = 8,528.40 : x
  2. Step 2: Convert to fraction form
    15,242.76/21,034.86 = 8,528.40/x
  3. Step 3: Cross multiply
    15,242.76x = 21,034.86 × 8,528.40
  4. Step 4: Simplify right side
    15,242.76x = 179,393,700.02
  5. Step 5: Solve for x
    x = 179,393,700.02/15,242.76
  6. Step 6: Final answer
    x = 11,769.11

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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.