Home / 28,541.60-39,425.06-21,909.18

Finding the Fourth Proportional to 28,541.60, 39,425.06 and 21,909.18

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Solution

The fourth proportional to 28,541.60, 39,425.06 and 21,909.18 is: 30,263.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,541.60 : 39,425.06 = 21,909.18 : x
  2. Step 2: Convert to fraction form
    28,541.60/39,425.06 = 21,909.18/x
  3. Step 3: Cross multiply
    28,541.60x = 39,425.06 × 21,909.18
  4. Step 4: Simplify right side
    28,541.60x = 863,770,626.50
  5. Step 5: Solve for x
    x = 863,770,626.50/28,541.60
  6. Step 6: Final answer
    x = 30,263.57

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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.