Home / 15,418.13-21,265.56-9,368.34

Finding the Fourth Proportional to 15,418.13, 21,265.56 and 9,368.34

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Solution

The fourth proportional to 15,418.13, 21,265.56 and 9,368.34 is: 12,921.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.13 : 21,265.56 = 9,368.34 : x
  2. Step 2: Convert to fraction form
    15,418.13/21,265.56 = 9,368.34/x
  3. Step 3: Cross multiply
    15,418.13x = 21,265.56 × 9,368.34
  4. Step 4: Simplify right side
    15,418.13x = 199,222,996.37
  5. Step 5: Solve for x
    x = 199,222,996.37/15,418.13
  6. Step 6: Final answer
    x = 12,921.35

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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.