Home / 30,278.95-45,418.70-10,557.48

Finding the Fourth Proportional to 30,278.95, 45,418.70 and 10,557.48

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Solution

The fourth proportional to 30,278.95, 45,418.70 and 10,557.48 is: 15,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.95 : 45,418.70 = 10,557.48 : x
  2. Step 2: Convert to fraction form
    30,278.95/45,418.70 = 10,557.48/x
  3. Step 3: Cross multiply
    30,278.95x = 45,418.70 × 10,557.48
  4. Step 4: Simplify right side
    30,278.95x = 479,507,016.88
  5. Step 5: Solve for x
    x = 479,507,016.88/30,278.95
  6. Step 6: Final answer
    x = 15,836.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.