Home / 31,125.22-46,690.68-12,400.72

Finding the Fourth Proportional to 31,125.22, 46,690.68 and 12,400.72

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Solution

The fourth proportional to 31,125.22, 46,690.68 and 12,400.72 is: 18,602.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,125.22 : 46,690.68 = 12,400.72 : x
  2. Step 2: Convert to fraction form
    31,125.22/46,690.68 = 12,400.72/x
  3. Step 3: Cross multiply
    31,125.22x = 46,690.68 × 12,400.72
  4. Step 4: Simplify right side
    31,125.22x = 578,998,049.29
  5. Step 5: Solve for x
    x = 578,998,049.29/31,125.22
  6. Step 6: Final answer
    x = 18,602.22

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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.