Home / 15,160.23-20,920.59-8,445.51

Finding the Fourth Proportional to 15,160.23, 20,920.59 and 8,445.51

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Solution

The fourth proportional to 15,160.23, 20,920.59 and 8,445.51 is: 11,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.23 : 20,920.59 = 8,445.51 : x
  2. Step 2: Convert to fraction form
    15,160.23/20,920.59 = 8,445.51/x
  3. Step 3: Cross multiply
    15,160.23x = 20,920.59 × 8,445.51
  4. Step 4: Simplify right side
    15,160.23x = 176,685,052.05
  5. Step 5: Solve for x
    x = 176,685,052.05/15,160.23
  6. Step 6: Final answer
    x = 11,654.51

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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.