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Finding the Fourth Proportional to 23,865.30, 35,712.90 and 20,779.20

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Solution

The fourth proportional to 23,865.30, 35,712.90 and 20,779.20 is: 31,094.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,865.30 : 35,712.90 = 20,779.20 : x
  2. Step 2: Convert to fraction form
    23,865.30/35,712.90 = 20,779.20/x
  3. Step 3: Cross multiply
    23,865.30x = 35,712.90 × 20,779.20
  4. Step 4: Simplify right side
    23,865.30x = 742,085,491.68
  5. Step 5: Solve for x
    x = 742,085,491.68/23,865.30
  6. Step 6: Final answer
    x = 31,094.75

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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.