Home / 30,465.18-45,698.72-8,278.47

Finding the Fourth Proportional to 30,465.18, 45,698.72 and 8,278.47

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Solution

The fourth proportional to 30,465.18, 45,698.72 and 8,278.47 is: 12,417.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,465.18 : 45,698.72 = 8,278.47 : x
  2. Step 2: Convert to fraction form
    30,465.18/45,698.72 = 8,278.47/x
  3. Step 3: Cross multiply
    30,465.18x = 45,698.72 × 8,278.47
  4. Step 4: Simplify right side
    30,465.18x = 378,315,441.17
  5. Step 5: Solve for x
    x = 378,315,441.17/30,465.18
  6. Step 6: Final answer
    x = 12,417.96

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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.