Home / 28,719.08-43,075.18-7,660.70

Finding the Fourth Proportional to 28,719.08, 43,075.18 and 7,660.70

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Solution

The fourth proportional to 28,719.08, 43,075.18 and 7,660.70 is: 11,490.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.08 : 43,075.18 = 7,660.70 : x
  2. Step 2: Convert to fraction form
    28,719.08/43,075.18 = 7,660.70/x
  3. Step 3: Cross multiply
    28,719.08x = 43,075.18 × 7,660.70
  4. Step 4: Simplify right side
    28,719.08x = 329,986,031.43
  5. Step 5: Solve for x
    x = 329,986,031.43/28,719.08
  6. Step 6: Final answer
    x = 11,490.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.