Home / 30,088.42-45,139.84-9,311.92

Finding the Fourth Proportional to 30,088.42, 45,139.84 and 9,311.92

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Solution

The fourth proportional to 30,088.42, 45,139.84 and 9,311.92 is: 13,970.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,088.42 : 45,139.84 = 9,311.92 : x
  2. Step 2: Convert to fraction form
    30,088.42/45,139.84 = 9,311.92/x
  3. Step 3: Cross multiply
    30,088.42x = 45,139.84 × 9,311.92
  4. Step 4: Simplify right side
    30,088.42x = 420,338,578.89
  5. Step 5: Solve for x
    x = 420,338,578.89/30,088.42
  6. Step 6: Final answer
    x = 13,970.11

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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.