Home / 15,327.28-21,143.28-10,027.36

Finding the Fourth Proportional to 15,327.28, 21,143.28 and 10,027.36

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Solution

The fourth proportional to 15,327.28, 21,143.28 and 10,027.36 is: 13,832.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,327.28 : 21,143.28 = 10,027.36 : x
  2. Step 2: Convert to fraction form
    15,327.28/21,143.28 = 10,027.36/x
  3. Step 3: Cross multiply
    15,327.28x = 21,143.28 × 10,027.36
  4. Step 4: Simplify right side
    15,327.28x = 212,011,280.14
  5. Step 5: Solve for x
    x = 212,011,280.14/15,327.28
  6. Step 6: Final answer
    x = 13,832.28

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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.