Home / 21,348.60-29,462.69-11,790.31

Finding the Fourth Proportional to 21,348.60, 29,462.69 and 11,790.31

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Solution

The fourth proportional to 21,348.60, 29,462.69 and 11,790.31 is: 16,271.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,348.60 : 29,462.69 = 11,790.31 : x
  2. Step 2: Convert to fraction form
    21,348.60/29,462.69 = 11,790.31/x
  3. Step 3: Cross multiply
    21,348.60x = 29,462.69 × 11,790.31
  4. Step 4: Simplify right side
    21,348.60x = 347,374,248.53
  5. Step 5: Solve for x
    x = 347,374,248.53/21,348.60
  6. Step 6: Final answer
    x = 16,271.52

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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.