Home / 21,828.60-32,742.90-15,575.40

Finding the Fourth Proportional to 21,828.60, 32,742.90 and 15,575.40

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Solution

The fourth proportional to 21,828.60, 32,742.90 and 15,575.40 is: 23,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.60 : 32,742.90 = 15,575.40 : x
  2. Step 2: Convert to fraction form
    21,828.60/32,742.90 = 15,575.40/x
  3. Step 3: Cross multiply
    21,828.60x = 32,742.90 × 15,575.40
  4. Step 4: Simplify right side
    21,828.60x = 509,983,764.66
  5. Step 5: Solve for x
    x = 509,983,764.66/21,828.60
  6. Step 6: Final answer
    x = 23,363.10

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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.