Home / 21,808.32-30,079.20-14,727.36

Finding the Fourth Proportional to 21,808.32, 30,079.20 and 14,727.36

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Solution

The fourth proportional to 21,808.32, 30,079.20 and 14,727.36 is: 20,312.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.32 : 30,079.20 = 14,727.36 : x
  2. Step 2: Convert to fraction form
    21,808.32/30,079.20 = 14,727.36/x
  3. Step 3: Cross multiply
    21,808.32x = 30,079.20 × 14,727.36
  4. Step 4: Simplify right side
    21,808.32x = 442,987,206.91
  5. Step 5: Solve for x
    x = 442,987,206.91/21,808.32
  6. Step 6: Final answer
    x = 20,312.76

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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.