Home / 30,081.09-45,123.12-7,894.53

Finding the Fourth Proportional to 30,081.09, 45,123.12 and 7,894.53

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Solution

The fourth proportional to 30,081.09, 45,123.12 and 7,894.53 is: 11,842.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,081.09 : 45,123.12 = 7,894.53 : x
  2. Step 2: Convert to fraction form
    30,081.09/45,123.12 = 7,894.53/x
  3. Step 3: Cross multiply
    30,081.09x = 45,123.12 × 7,894.53
  4. Step 4: Simplify right side
    30,081.09x = 356,225,824.53
  5. Step 5: Solve for x
    x = 356,225,824.53/30,081.09
  6. Step 6: Final answer
    x = 11,842.18

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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.