Home / 15,510.05-21,404.14-8,436.52

Finding the Fourth Proportional to 15,510.05, 21,404.14 and 8,436.52

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Solution

The fourth proportional to 15,510.05, 21,404.14 and 8,436.52 is: 11,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.05 : 21,404.14 = 8,436.52 : x
  2. Step 2: Convert to fraction form
    15,510.05/21,404.14 = 8,436.52/x
  3. Step 3: Cross multiply
    15,510.05x = 21,404.14 × 8,436.52
  4. Step 4: Simplify right side
    15,510.05x = 180,576,455.19
  5. Step 5: Solve for x
    x = 180,576,455.19/15,510.05
  6. Step 6: Final answer
    x = 11,642.55

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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.