Home / 14,456.32-21,690.96-13,315.84

Finding the Fourth Proportional to 14,456.32, 21,690.96 and 13,315.84

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Solution

The fourth proportional to 14,456.32, 21,690.96 and 13,315.84 is: 19,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,456.32 : 21,690.96 = 13,315.84 : x
  2. Step 2: Convert to fraction form
    14,456.32/21,690.96 = 13,315.84/x
  3. Step 3: Cross multiply
    14,456.32x = 21,690.96 × 13,315.84
  4. Step 4: Simplify right side
    14,456.32x = 288,833,352.81
  5. Step 5: Solve for x
    x = 288,833,352.81/14,456.32
  6. Step 6: Final answer
    x = 19,979.73

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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.