Home / 10,278.81-15,327.96-10,185.26

Finding the Fourth Proportional to 10,278.81, 15,327.96 and 10,185.26

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Solution

The fourth proportional to 10,278.81, 15,327.96 and 10,185.26 is: 15,188.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.81 : 15,327.96 = 10,185.26 : x
  2. Step 2: Convert to fraction form
    10,278.81/15,327.96 = 10,185.26/x
  3. Step 3: Cross multiply
    10,278.81x = 15,327.96 × 10,185.26
  4. Step 4: Simplify right side
    10,278.81x = 156,119,181.23
  5. Step 5: Solve for x
    x = 156,119,181.23/10,278.81
  6. Step 6: Final answer
    x = 15,188.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.