Home / 16,347.60-22,508.80-13,689.20

Finding the Fourth Proportional to 16,347.60, 22,508.80 and 13,689.20

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Solution

The fourth proportional to 16,347.60, 22,508.80 and 13,689.20 is: 18,848.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,347.60 : 22,508.80 = 13,689.20 : x
  2. Step 2: Convert to fraction form
    16,347.60/22,508.80 = 13,689.20/x
  3. Step 3: Cross multiply
    16,347.60x = 22,508.80 × 13,689.20
  4. Step 4: Simplify right side
    16,347.60x = 308,127,464.96
  5. Step 5: Solve for x
    x = 308,127,464.96/16,347.60
  6. Step 6: Final answer
    x = 18,848.48

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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.