Home / 21,779.28-32,649.48-10,076.40

Finding the Fourth Proportional to 21,779.28, 32,649.48 and 10,076.40

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Solution

The fourth proportional to 21,779.28, 32,649.48 and 10,076.40 is: 15,105.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.28 : 32,649.48 = 10,076.40 : x
  2. Step 2: Convert to fraction form
    21,779.28/32,649.48 = 10,076.40/x
  3. Step 3: Cross multiply
    21,779.28x = 32,649.48 × 10,076.40
  4. Step 4: Simplify right side
    21,779.28x = 328,989,220.27
  5. Step 5: Solve for x
    x = 328,989,220.27/21,779.28
  6. Step 6: Final answer
    x = 15,105.61

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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.