Home / 15,708.32-21,678.72-8,996.06

Finding the Fourth Proportional to 15,708.32, 21,678.72 and 8,996.06

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Solution

The fourth proportional to 15,708.32, 21,678.72 and 8,996.06 is: 12,415.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,708.32 : 21,678.72 = 8,996.06 : x
  2. Step 2: Convert to fraction form
    15,708.32/21,678.72 = 8,996.06/x
  3. Step 3: Cross multiply
    15,708.32x = 21,678.72 × 8,996.06
  4. Step 4: Simplify right side
    15,708.32x = 195,023,065.84
  5. Step 5: Solve for x
    x = 195,023,065.84/15,708.32
  6. Step 6: Final answer
    x = 12,415.27

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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.