Home / 15,111.83-20,853.45-8,397.07

Finding the Fourth Proportional to 15,111.83, 20,853.45 and 8,397.07

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Solution

The fourth proportional to 15,111.83, 20,853.45 and 8,397.07 is: 11,587.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.83 : 20,853.45 = 8,397.07 : x
  2. Step 2: Convert to fraction form
    15,111.83/20,853.45 = 8,397.07/x
  3. Step 3: Cross multiply
    15,111.83x = 20,853.45 × 8,397.07
  4. Step 4: Simplify right side
    15,111.83x = 175,107,827.26
  5. Step 5: Solve for x
    x = 175,107,827.26/15,111.83
  6. Step 6: Final answer
    x = 11,587.46

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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.