Home / 20,848.32-31,272.48-15,677.28

Finding the Fourth Proportional to 20,848.32, 31,272.48 and 15,677.28

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Solution

The fourth proportional to 20,848.32, 31,272.48 and 15,677.28 is: 23,515.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.32 : 31,272.48 = 15,677.28 : x
  2. Step 2: Convert to fraction form
    20,848.32/31,272.48 = 15,677.28/x
  3. Step 3: Cross multiply
    20,848.32x = 31,272.48 × 15,677.28
  4. Step 4: Simplify right side
    20,848.32x = 490,267,425.25
  5. Step 5: Solve for x
    x = 490,267,425.25/20,848.32
  6. Step 6: Final answer
    x = 23,515.92

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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.