Home / 30,240.80-45,368.87-21,373.57

Finding the Fourth Proportional to 30,240.80, 45,368.87 and 21,373.57

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Solution

The fourth proportional to 30,240.80, 45,368.87 and 21,373.57 is: 32,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,240.80 : 45,368.87 = 21,373.57 : x
  2. Step 2: Convert to fraction form
    30,240.80/45,368.87 = 21,373.57/x
  3. Step 3: Cross multiply
    30,240.80x = 45,368.87 × 21,373.57
  4. Step 4: Simplify right side
    30,240.80x = 969,694,718.77
  5. Step 5: Solve for x
    x = 969,694,718.77/30,240.80
  6. Step 6: Final answer
    x = 32,065.78

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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.