Home / 15,771.60-21,757.20-9,810.24

Finding the Fourth Proportional to 15,771.60, 21,757.20 and 9,810.24

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Solution

The fourth proportional to 15,771.60, 21,757.20 and 9,810.24 is: 13,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,771.60 : 21,757.20 = 9,810.24 : x
  2. Step 2: Convert to fraction form
    15,771.60/21,757.20 = 9,810.24/x
  3. Step 3: Cross multiply
    15,771.60x = 21,757.20 × 9,810.24
  4. Step 4: Simplify right side
    15,771.60x = 213,443,353.73
  5. Step 5: Solve for x
    x = 213,443,353.73/15,771.60
  6. Step 6: Final answer
    x = 13,533.40

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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.