Home / 31,346.29-47,019.74-7,972.72

Finding the Fourth Proportional to 31,346.29, 47,019.74 and 7,972.72

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Solution

The fourth proportional to 31,346.29, 47,019.74 and 7,972.72 is: 11,959.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,346.29 : 47,019.74 = 7,972.72 : x
  2. Step 2: Convert to fraction form
    31,346.29/47,019.74 = 7,972.72/x
  3. Step 3: Cross multiply
    31,346.29x = 47,019.74 × 7,972.72
  4. Step 4: Simplify right side
    31,346.29x = 374,875,221.49
  5. Step 5: Solve for x
    x = 374,875,221.49/31,346.29
  6. Step 6: Final answer
    x = 11,959.16

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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.