Home / 28,437.07-42,663.80-8,718.53

Finding the Fourth Proportional to 28,437.07, 42,663.80 and 8,718.53

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Solution

The fourth proportional to 28,437.07, 42,663.80 and 8,718.53 is: 13,080.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.07 : 42,663.80 = 8,718.53 : x
  2. Step 2: Convert to fraction form
    28,437.07/42,663.80 = 8,718.53/x
  3. Step 3: Cross multiply
    28,437.07x = 42,663.80 × 8,718.53
  4. Step 4: Simplify right side
    28,437.07x = 371,965,576.62
  5. Step 5: Solve for x
    x = 371,965,576.62/28,437.07
  6. Step 6: Final answer
    x = 13,080.31

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1.5x scale

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.