Home / 13,204.47-18,203.31-9,421.17

Finding the Fourth Proportional to 13,204.47, 18,203.31 and 9,421.17

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Solution

The fourth proportional to 13,204.47, 18,203.31 and 9,421.17 is: 12,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.47 : 18,203.31 = 9,421.17 : x
  2. Step 2: Convert to fraction form
    13,204.47/18,203.31 = 9,421.17/x
  3. Step 3: Cross multiply
    13,204.47x = 18,203.31 × 9,421.17
  4. Step 4: Simplify right side
    13,204.47x = 171,496,478.07
  5. Step 5: Solve for x
    x = 171,496,478.07/13,204.47
  6. Step 6: Final answer
    x = 12,987.76

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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.