Home / 15,510.40-21,404.10-8,436.94

Finding the Fourth Proportional to 15,510.40, 21,404.10 and 8,436.94

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Solution

The fourth proportional to 15,510.40, 21,404.10 and 8,436.94 is: 11,642.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.40 : 21,404.10 = 8,436.94 : x
  2. Step 2: Convert to fraction form
    15,510.40/21,404.10 = 8,436.94/x
  3. Step 3: Cross multiply
    15,510.40x = 21,404.10 × 8,436.94
  4. Step 4: Simplify right side
    15,510.40x = 180,585,107.45
  5. Step 5: Solve for x
    x = 180,585,107.45/15,510.40
  6. Step 6: Final answer
    x = 11,642.84

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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.