Home / 34,308.72-47,347.20-20,161.32

Finding the Fourth Proportional to 34,308.72, 47,347.20 and 20,161.32

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Solution

The fourth proportional to 34,308.72, 47,347.20 and 20,161.32 is: 27,823.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,308.72 : 47,347.20 = 20,161.32 : x
  2. Step 2: Convert to fraction form
    34,308.72/47,347.20 = 20,161.32/x
  3. Step 3: Cross multiply
    34,308.72x = 47,347.20 × 20,161.32
  4. Step 4: Simplify right side
    34,308.72x = 954,582,050.30
  5. Step 5: Solve for x
    x = 954,582,050.30/34,308.72
  6. Step 6: Final answer
    x = 27,823.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.