Home / 31,343.03-47,030.71-20,820.32

Finding the Fourth Proportional to 31,343.03, 47,030.71 and 20,820.32

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Solution

The fourth proportional to 31,343.03, 47,030.71 and 20,820.32 is: 31,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,343.03 : 47,030.71 = 20,820.32 : x
  2. Step 2: Convert to fraction form
    31,343.03/47,030.71 = 20,820.32/x
  3. Step 3: Cross multiply
    31,343.03x = 47,030.71 × 20,820.32
  4. Step 4: Simplify right side
    31,343.03x = 979,194,432.03
  5. Step 5: Solve for x
    x = 979,194,432.03/31,343.03
  6. Step 6: Final answer
    x = 31,241.22

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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.