Home / 15,407.80-21,262.72-8,693.40

Finding the Fourth Proportional to 15,407.80, 21,262.72 and 8,693.40

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Solution

The fourth proportional to 15,407.80, 21,262.72 and 8,693.40 is: 11,996.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.80 : 21,262.72 = 8,693.40 : x
  2. Step 2: Convert to fraction form
    15,407.80/21,262.72 = 8,693.40/x
  3. Step 3: Cross multiply
    15,407.80x = 21,262.72 × 8,693.40
  4. Step 4: Simplify right side
    15,407.80x = 184,845,330.05
  5. Step 5: Solve for x
    x = 184,845,330.05/15,407.80
  6. Step 6: Final answer
    x = 11,996.87

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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.