Home / 31,343.76-47,017.08-7,970.40

Finding the Fourth Proportional to 31,343.76, 47,017.08 and 7,970.40

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Solution

The fourth proportional to 31,343.76, 47,017.08 and 7,970.40 is: 11,955.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,343.76 : 47,017.08 = 7,970.40 : x
  2. Step 2: Convert to fraction form
    31,343.76/47,017.08 = 7,970.40/x
  3. Step 3: Cross multiply
    31,343.76x = 47,017.08 × 7,970.40
  4. Step 4: Simplify right side
    31,343.76x = 374,744,934.43
  5. Step 5: Solve for x
    x = 374,744,934.43/31,343.76
  6. Step 6: Final answer
    x = 11,955.97

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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.