Home / 15,918.96-21,966.48-9,203.52

Finding the Fourth Proportional to 15,918.96, 21,966.48 and 9,203.52

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Solution

The fourth proportional to 15,918.96, 21,966.48 and 9,203.52 is: 12,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,918.96 : 21,966.48 = 9,203.52 : x
  2. Step 2: Convert to fraction form
    15,918.96/21,966.48 = 9,203.52/x
  3. Step 3: Cross multiply
    15,918.96x = 21,966.48 × 9,203.52
  4. Step 4: Simplify right side
    15,918.96x = 202,168,938.01
  5. Step 5: Solve for x
    x = 202,168,938.01/15,918.96
  6. Step 6: Final answer
    x = 12,699.88

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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.