Home / 31,428.45-47,143.08-8,054.28

Finding the Fourth Proportional to 31,428.45, 47,143.08 and 8,054.28

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Solution

The fourth proportional to 31,428.45, 47,143.08 and 8,054.28 is: 12,081.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.45 : 47,143.08 = 8,054.28 : x
  2. Step 2: Convert to fraction form
    31,428.45/47,143.08 = 8,054.28/x
  3. Step 3: Cross multiply
    31,428.45x = 47,143.08 × 8,054.28
  4. Step 4: Simplify right side
    31,428.45x = 379,703,566.38
  5. Step 5: Solve for x
    x = 379,703,566.38/31,428.45
  6. Step 6: Final answer
    x = 12,081.52

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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.