Home / 18,715.78-28,041.95-11,304.67

Finding the Fourth Proportional to 18,715.78, 28,041.95 and 11,304.67

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Solution

The fourth proportional to 18,715.78, 28,041.95 and 11,304.67 is: 16,937.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.78 : 28,041.95 = 11,304.67 : x
  2. Step 2: Convert to fraction form
    18,715.78/28,041.95 = 11,304.67/x
  3. Step 3: Cross multiply
    18,715.78x = 28,041.95 × 11,304.67
  4. Step 4: Simplify right side
    18,715.78x = 317,005,054.22
  5. Step 5: Solve for x
    x = 317,005,054.22/18,715.78
  6. Step 6: Final answer
    x = 16,937.85

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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.