Home / 19,286.07-28,928.58-10,405.29

Finding the Fourth Proportional to 19,286.07, 28,928.58 and 10,405.29

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Solution

The fourth proportional to 19,286.07, 28,928.58 and 10,405.29 is: 15,607.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.07 : 28,928.58 = 10,405.29 : x
  2. Step 2: Convert to fraction form
    19,286.07/28,928.58 = 10,405.29/x
  3. Step 3: Cross multiply
    19,286.07x = 28,928.58 × 10,405.29
  4. Step 4: Simplify right side
    19,286.07x = 301,010,264.19
  5. Step 5: Solve for x
    x = 301,010,264.19/19,286.07
  6. Step 6: Final answer
    x = 15,607.65

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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.