Home / 15,699.28-21,667.08-10,126.48

Finding the Fourth Proportional to 15,699.28, 21,667.08 and 10,126.48

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Solution

The fourth proportional to 15,699.28, 21,667.08 and 10,126.48 is: 13,975.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.28 : 21,667.08 = 10,126.48 : x
  2. Step 2: Convert to fraction form
    15,699.28/21,667.08 = 10,126.48/x
  3. Step 3: Cross multiply
    15,699.28x = 21,667.08 × 10,126.48
  4. Step 4: Simplify right side
    15,699.28x = 219,411,252.28
  5. Step 5: Solve for x
    x = 219,411,252.28/15,699.28
  6. Step 6: Final answer
    x = 13,975.88

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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.