Home / 31,415.96-47,139.32-14,777.69

Finding the Fourth Proportional to 31,415.96, 47,139.32 and 14,777.69

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Solution

The fourth proportional to 31,415.96, 47,139.32 and 14,777.69 is: 22,173.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.96 : 47,139.32 = 14,777.69 : x
  2. Step 2: Convert to fraction form
    31,415.96/47,139.32 = 14,777.69/x
  3. Step 3: Cross multiply
    31,415.96x = 47,139.32 × 14,777.69
  4. Step 4: Simplify right side
    31,415.96x = 696,610,257.77
  5. Step 5: Solve for x
    x = 696,610,257.77/31,415.96
  6. Step 6: Final answer
    x = 22,173.77

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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.