Home / 21,864.35-32,812.46-8,720.48

Finding the Fourth Proportional to 21,864.35, 32,812.46 and 8,720.48

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Solution

The fourth proportional to 21,864.35, 32,812.46 and 8,720.48 is: 13,087.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,864.35 : 32,812.46 = 8,720.48 : x
  2. Step 2: Convert to fraction form
    21,864.35/32,812.46 = 8,720.48/x
  3. Step 3: Cross multiply
    21,864.35x = 32,812.46 × 8,720.48
  4. Step 4: Simplify right side
    21,864.35x = 286,140,193.52
  5. Step 5: Solve for x
    x = 286,140,193.52/21,864.35
  6. Step 6: Final answer
    x = 13,087.07

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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.