Home / 21,932.32-30,276.62-12,856.45

Finding the Fourth Proportional to 21,932.32, 30,276.62 and 12,856.45

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Solution

The fourth proportional to 21,932.32, 30,276.62 and 12,856.45 is: 17,747.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.32 : 30,276.62 = 12,856.45 : x
  2. Step 2: Convert to fraction form
    21,932.32/30,276.62 = 12,856.45/x
  3. Step 3: Cross multiply
    21,932.32x = 30,276.62 × 12,856.45
  4. Step 4: Simplify right side
    21,932.32x = 389,249,851.20
  5. Step 5: Solve for x
    x = 389,249,851.20/21,932.32
  6. Step 6: Final answer
    x = 17,747.77

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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.