Home / 15,510.07-21,404.21-8,436.95

Finding the Fourth Proportional to 15,510.07, 21,404.21 and 8,436.95

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Solution

The fourth proportional to 15,510.07, 21,404.21 and 8,436.95 is: 11,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.07 : 21,404.21 = 8,436.95 : x
  2. Step 2: Convert to fraction form
    15,510.07/21,404.21 = 8,436.95/x
  3. Step 3: Cross multiply
    15,510.07x = 21,404.21 × 8,436.95
  4. Step 4: Simplify right side
    15,510.07x = 180,586,249.56
  5. Step 5: Solve for x
    x = 180,586,249.56/15,510.07
  6. Step 6: Final answer
    x = 11,643.16

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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.