Home / 15,362.39-21,189.56-9,397.01

Finding the Fourth Proportional to 15,362.39, 21,189.56 and 9,397.01

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Solution

The fourth proportional to 15,362.39, 21,189.56 and 9,397.01 is: 12,961.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,362.39 : 21,189.56 = 9,397.01 : x
  2. Step 2: Convert to fraction form
    15,362.39/21,189.56 = 9,397.01/x
  3. Step 3: Cross multiply
    15,362.39x = 21,189.56 × 9,397.01
  4. Step 4: Simplify right side
    15,362.39x = 199,118,513.20
  5. Step 5: Solve for x
    x = 199,118,513.20/15,362.39
  6. Step 6: Final answer
    x = 12,961.43

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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.