Home / 15,812.60-21,822.24-8,739.68

Finding the Fourth Proportional to 15,812.60, 21,822.24 and 8,739.68

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Solution

The fourth proportional to 15,812.60, 21,822.24 and 8,739.68 is: 12,061.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.60 : 21,822.24 = 8,739.68 : x
  2. Step 2: Convert to fraction form
    15,812.60/21,822.24 = 8,739.68/x
  3. Step 3: Cross multiply
    15,812.60x = 21,822.24 × 8,739.68
  4. Step 4: Simplify right side
    15,812.60x = 190,719,394.48
  5. Step 5: Solve for x
    x = 190,719,394.48/15,812.60
  6. Step 6: Final answer
    x = 12,061.23

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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.