Home / 15,864.04-21,892.30-8,790.45

Finding the Fourth Proportional to 15,864.04, 21,892.30 and 8,790.45

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Solution

The fourth proportional to 15,864.04, 21,892.30 and 8,790.45 is: 12,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.04 : 21,892.30 = 8,790.45 : x
  2. Step 2: Convert to fraction form
    15,864.04/21,892.30 = 8,790.45/x
  3. Step 3: Cross multiply
    15,864.04x = 21,892.30 × 8,790.45
  4. Step 4: Simplify right side
    15,864.04x = 192,443,168.54
  5. Step 5: Solve for x
    x = 192,443,168.54/15,864.04
  6. Step 6: Final answer
    x = 12,130.78

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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.