Home / 13,498.08-20,221.20-7,637.28

Finding the Fourth Proportional to 13,498.08, 20,221.20 and 7,637.28

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Solution

The fourth proportional to 13,498.08, 20,221.20 and 7,637.28 is: 11,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.08 : 20,221.20 = 7,637.28 : x
  2. Step 2: Convert to fraction form
    13,498.08/20,221.20 = 7,637.28/x
  3. Step 3: Cross multiply
    13,498.08x = 20,221.20 × 7,637.28
  4. Step 4: Simplify right side
    13,498.08x = 154,434,966.34
  5. Step 5: Solve for x
    x = 154,434,966.34/13,498.08
  6. Step 6: Final answer
    x = 11,441.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.