Home / 20,886.24-28,822.16-12,497.76

Finding the Fourth Proportional to 20,886.24, 28,822.16 and 12,497.76

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Solution

The fourth proportional to 20,886.24, 28,822.16 and 12,497.76 is: 17,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.24 : 28,822.16 = 12,497.76 : x
  2. Step 2: Convert to fraction form
    20,886.24/28,822.16 = 12,497.76/x
  3. Step 3: Cross multiply
    20,886.24x = 28,822.16 × 12,497.76
  4. Step 4: Simplify right side
    20,886.24x = 360,212,438.36
  5. Step 5: Solve for x
    x = 360,212,438.36/20,886.24
  6. Step 6: Final answer
    x = 17,246.40

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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.