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Finding the Fourth Proportional to 15,293.67, 21,111.74 and 9,327.48

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Solution

The fourth proportional to 15,293.67, 21,111.74 and 9,327.48 is: 12,875.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,293.67 : 21,111.74 = 9,327.48 : x
  2. Step 2: Convert to fraction form
    15,293.67/21,111.74 = 9,327.48/x
  3. Step 3: Cross multiply
    15,293.67x = 21,111.74 × 9,327.48
  4. Step 4: Simplify right side
    15,293.67x = 196,919,332.62
  5. Step 5: Solve for x
    x = 196,919,332.62/15,293.67
  6. Step 6: Final answer
    x = 12,875.87

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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.