Home / 31,343.78-47,015.98-7,970.22

Finding the Fourth Proportional to 31,343.78, 47,015.98 and 7,970.22

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Solution

The fourth proportional to 31,343.78, 47,015.98 and 7,970.22 is: 11,955.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,343.78 : 47,015.98 = 7,970.22 : x
  2. Step 2: Convert to fraction form
    31,343.78/47,015.98 = 7,970.22/x
  3. Step 3: Cross multiply
    31,343.78x = 47,015.98 × 7,970.22
  4. Step 4: Simplify right side
    31,343.78x = 374,727,684.19
  5. Step 5: Solve for x
    x = 374,727,684.19/31,343.78
  6. Step 6: Final answer
    x = 11,955.41

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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.