Home / 15,630.57-21,555.54-12,454.38

Finding the Fourth Proportional to 15,630.57, 21,555.54 and 12,454.38

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Solution

The fourth proportional to 15,630.57, 21,555.54 and 12,454.38 is: 17,175.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,630.57 : 21,555.54 = 12,454.38 : x
  2. Step 2: Convert to fraction form
    15,630.57/21,555.54 = 12,454.38/x
  3. Step 3: Cross multiply
    15,630.57x = 21,555.54 × 12,454.38
  4. Step 4: Simplify right side
    15,630.57x = 268,460,886.27
  5. Step 5: Solve for x
    x = 268,460,886.27/15,630.57
  6. Step 6: Final answer
    x = 17,175.37

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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.