Home / 30,278.86-45,418.49-10,557.35

Finding the Fourth Proportional to 30,278.86, 45,418.49 and 10,557.35

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Solution

The fourth proportional to 30,278.86, 45,418.49 and 10,557.35 is: 15,836.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.86 : 45,418.49 = 10,557.35 : x
  2. Step 2: Convert to fraction form
    30,278.86/45,418.49 = 10,557.35/x
  3. Step 3: Cross multiply
    30,278.86x = 45,418.49 × 10,557.35
  4. Step 4: Simplify right side
    30,278.86x = 479,498,895.40
  5. Step 5: Solve for x
    x = 479,498,895.40/30,278.86
  6. Step 6: Final answer
    x = 15,836.09

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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.