Home / 31,800.86-47,703.18-8,427.22

Finding the Fourth Proportional to 31,800.86, 47,703.18 and 8,427.22

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Solution

The fourth proportional to 31,800.86, 47,703.18 and 8,427.22 is: 12,641.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,800.86 : 47,703.18 = 8,427.22 : x
  2. Step 2: Convert to fraction form
    31,800.86/47,703.18 = 8,427.22/x
  3. Step 3: Cross multiply
    31,800.86x = 47,703.18 × 8,427.22
  4. Step 4: Simplify right side
    31,800.86x = 402,005,192.56
  5. Step 5: Solve for x
    x = 402,005,192.56/31,800.86
  6. Step 6: Final answer
    x = 12,641.33

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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.