Home / 15,823.20-23,734.80-9,991.20

Finding the Fourth Proportional to 15,823.20, 23,734.80 and 9,991.20

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Solution

The fourth proportional to 15,823.20, 23,734.80 and 9,991.20 is: 14,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.20 : 23,734.80 = 9,991.20 : x
  2. Step 2: Convert to fraction form
    15,823.20/23,734.80 = 9,991.20/x
  3. Step 3: Cross multiply
    15,823.20x = 23,734.80 × 9,991.20
  4. Step 4: Simplify right side
    15,823.20x = 237,139,133.76
  5. Step 5: Solve for x
    x = 237,139,133.76/15,823.20
  6. Step 6: Final answer
    x = 14,986.80

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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.