Home / 30,078.27-45,116.87-10,356.39

Finding the Fourth Proportional to 30,078.27, 45,116.87 and 10,356.39

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Solution

The fourth proportional to 30,078.27, 45,116.87 and 10,356.39 is: 15,534.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.27 : 45,116.87 = 10,356.39 : x
  2. Step 2: Convert to fraction form
    30,078.27/45,116.87 = 10,356.39/x
  3. Step 3: Cross multiply
    30,078.27x = 45,116.87 × 10,356.39
  4. Step 4: Simplify right side
    30,078.27x = 467,247,849.52
  5. Step 5: Solve for x
    x = 467,247,849.52/30,078.27
  6. Step 6: Final answer
    x = 15,534.40

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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.