Home / 15,407.23-21,260.59-8,691.07

Finding the Fourth Proportional to 15,407.23, 21,260.59 and 8,691.07

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Solution

The fourth proportional to 15,407.23, 21,260.59 and 8,691.07 is: 11,992.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.23 : 21,260.59 = 8,691.07 : x
  2. Step 2: Convert to fraction form
    15,407.23/21,260.59 = 8,691.07/x
  3. Step 3: Cross multiply
    15,407.23x = 21,260.59 × 8,691.07
  4. Step 4: Simplify right side
    15,407.23x = 184,777,275.93
  5. Step 5: Solve for x
    x = 184,777,275.93/15,407.23
  6. Step 6: Final answer
    x = 11,992.89

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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.