Home / 18,928.49-28,368.12-10,153.15

Finding the Fourth Proportional to 18,928.49, 28,368.12 and 10,153.15

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Solution

The fourth proportional to 18,928.49, 28,368.12 and 10,153.15 is: 15,216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928.49 : 28,368.12 = 10,153.15 : x
  2. Step 2: Convert to fraction form
    18,928.49/28,368.12 = 10,153.15/x
  3. Step 3: Cross multiply
    18,928.49x = 28,368.12 × 10,153.15
  4. Step 4: Simplify right side
    18,928.49x = 288,025,744.73
  5. Step 5: Solve for x
    x = 288,025,744.73/18,928.49
  6. Step 6: Final answer
    x = 15,216.52

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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.