Home / 28,376.57-39,159.20-15,630.96

Finding the Fourth Proportional to 28,376.57, 39,159.20 and 15,630.96

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Solution

The fourth proportional to 28,376.57, 39,159.20 and 15,630.96 is: 21,570.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,376.57 : 39,159.20 = 15,630.96 : x
  2. Step 2: Convert to fraction form
    28,376.57/39,159.20 = 15,630.96/x
  3. Step 3: Cross multiply
    28,376.57x = 39,159.20 × 15,630.96
  4. Step 4: Simplify right side
    28,376.57x = 612,095,810.68
  5. Step 5: Solve for x
    x = 612,095,810.68/28,376.57
  6. Step 6: Final answer
    x = 21,570.47

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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.