Home / 15,886.47-21,924.04-8,812.90

Finding the Fourth Proportional to 15,886.47, 21,924.04 and 8,812.90

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Solution

The fourth proportional to 15,886.47, 21,924.04 and 8,812.90 is: 12,162.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,886.47 : 21,924.04 = 8,812.90 : x
  2. Step 2: Convert to fraction form
    15,886.47/21,924.04 = 8,812.90/x
  3. Step 3: Cross multiply
    15,886.47x = 21,924.04 × 8,812.90
  4. Step 4: Simplify right side
    15,886.47x = 193,214,262.50
  5. Step 5: Solve for x
    x = 193,214,262.50/15,886.47
  6. Step 6: Final answer
    x = 12,162.19

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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.