Home / 19,188.16-28,758.05-10,281.40

Finding the Fourth Proportional to 19,188.16, 28,758.05 and 10,281.40

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Solution

The fourth proportional to 19,188.16, 28,758.05 and 10,281.40 is: 15,409.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.16 : 28,758.05 = 10,281.40 : x
  2. Step 2: Convert to fraction form
    19,188.16/28,758.05 = 10,281.40/x
  3. Step 3: Cross multiply
    19,188.16x = 28,758.05 × 10,281.40
  4. Step 4: Simplify right side
    19,188.16x = 295,672,930.52
  5. Step 5: Solve for x
    x = 295,672,930.52/19,188.16
  6. Step 6: Final answer
    x = 15,409.14

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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.