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Finding the Fourth Proportional to 31,394.60, 47,062.62 and 10,603.56

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Solution

The fourth proportional to 31,394.60, 47,062.62 and 10,603.56 is: 15,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,394.60 : 47,062.62 = 10,603.56 : x
  2. Step 2: Convert to fraction form
    31,394.60/47,062.62 = 10,603.56/x
  3. Step 3: Cross multiply
    31,394.60x = 47,062.62 × 10,603.56
  4. Step 4: Simplify right side
    31,394.60x = 499,031,314.93
  5. Step 5: Solve for x
    x = 499,031,314.93/31,394.60
  6. Step 6: Final answer
    x = 15,895.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.