Home / 31,430.41-47,147.08-10,372.30

Finding the Fourth Proportional to 31,430.41, 47,147.08 and 10,372.30

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Solution

The fourth proportional to 31,430.41, 47,147.08 and 10,372.30 is: 15,558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.41 : 47,147.08 = 10,372.30 : x
  2. Step 2: Convert to fraction form
    31,430.41/47,147.08 = 10,372.30/x
  3. Step 3: Cross multiply
    31,430.41x = 47,147.08 × 10,372.30
  4. Step 4: Simplify right side
    31,430.41x = 489,023,657.88
  5. Step 5: Solve for x
    x = 489,023,657.88/31,430.41
  6. Step 6: Final answer
    x = 15,558.93

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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.