Home / 20,627.84-28,462.72-12,246.40

Finding the Fourth Proportional to 20,627.84, 28,462.72 and 12,246.40

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Solution

The fourth proportional to 20,627.84, 28,462.72 and 12,246.40 is: 16,897.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,627.84 : 28,462.72 = 12,246.40 : x
  2. Step 2: Convert to fraction form
    20,627.84/28,462.72 = 12,246.40/x
  3. Step 3: Cross multiply
    20,627.84x = 28,462.72 × 12,246.40
  4. Step 4: Simplify right side
    20,627.84x = 348,565,854.21
  5. Step 5: Solve for x
    x = 348,565,854.21/20,627.84
  6. Step 6: Final answer
    x = 16,897.84

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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.