Home / 28,686.40-43,031.49-7,626.13

Finding the Fourth Proportional to 28,686.40, 43,031.49 and 7,626.13

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Solution

The fourth proportional to 28,686.40, 43,031.49 and 7,626.13 is: 11,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.40 : 43,031.49 = 7,626.13 : x
  2. Step 2: Convert to fraction form
    28,686.40/43,031.49 = 7,626.13/x
  3. Step 3: Cross multiply
    28,686.40x = 43,031.49 × 7,626.13
  4. Step 4: Simplify right side
    28,686.40x = 328,163,736.83
  5. Step 5: Solve for x
    x = 328,163,736.83/28,686.40
  6. Step 6: Final answer
    x = 11,439.70

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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.