Home / 20,307.40-28,024.02-11,354.80

Finding the Fourth Proportional to 20,307.40, 28,024.02 and 11,354.80

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Solution

The fourth proportional to 20,307.40, 28,024.02 and 11,354.80 is: 15,669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.40 : 28,024.02 = 11,354.80 : x
  2. Step 2: Convert to fraction form
    20,307.40/28,024.02 = 11,354.80/x
  3. Step 3: Cross multiply
    20,307.40x = 28,024.02 × 11,354.80
  4. Step 4: Simplify right side
    20,307.40x = 318,207,142.30
  5. Step 5: Solve for x
    x = 318,207,142.30/20,307.40
  6. Step 6: Final answer
    x = 15,669.52

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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.