Home / 21,907.60-32,818.20-13,116.40

Finding the Fourth Proportional to 21,907.60, 32,818.20 and 13,116.40

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Solution

The fourth proportional to 21,907.60, 32,818.20 and 13,116.40 is: 19,648.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,907.60 : 32,818.20 = 13,116.40 : x
  2. Step 2: Convert to fraction form
    21,907.60/32,818.20 = 13,116.40/x
  3. Step 3: Cross multiply
    21,907.60x = 32,818.20 × 13,116.40
  4. Step 4: Simplify right side
    21,907.60x = 430,456,638.48
  5. Step 5: Solve for x
    x = 430,456,638.48/21,907.60
  6. Step 6: Final answer
    x = 19,648.74

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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.