Home / 25,856.16-38,790-14,163.36

Finding the Fourth Proportional to 25,856.16, 38,790 and 14,163.36

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Solution

The fourth proportional to 25,856.16, 38,790 and 14,163.36 is: 21,248.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,856.16 : 38,790 = 14,163.36 : x
  2. Step 2: Convert to fraction form
    25,856.16/38,790 = 14,163.36/x
  3. Step 3: Cross multiply
    25,856.16x = 38,790 × 14,163.36
  4. Step 4: Simplify right side
    25,856.16x = 549,396,734.40
  5. Step 5: Solve for x
    x = 549,396,734.40/25,856.16
  6. Step 6: Final answer
    x = 21,248.20

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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.