Home / 20,460.60-28,235.16-12,502.80

Finding the Fourth Proportional to 20,460.60, 28,235.16 and 12,502.80

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Solution

The fourth proportional to 20,460.60, 28,235.16 and 12,502.80 is: 17,253.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.60 : 28,235.16 = 12,502.80 : x
  2. Step 2: Convert to fraction form
    20,460.60/28,235.16 = 12,502.80/x
  3. Step 3: Cross multiply
    20,460.60x = 28,235.16 × 12,502.80
  4. Step 4: Simplify right side
    20,460.60x = 353,018,558.45
  5. Step 5: Solve for x
    x = 353,018,558.45/20,460.60
  6. Step 6: Final answer
    x = 17,253.58

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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.