Home / 19,328.20-28,980.56-9,455.12

Finding the Fourth Proportional to 19,328.20, 28,980.56 and 9,455.12

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Solution

The fourth proportional to 19,328.20, 28,980.56 and 9,455.12 is: 14,176.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,328.20 : 28,980.56 = 9,455.12 : x
  2. Step 2: Convert to fraction form
    19,328.20/28,980.56 = 9,455.12/x
  3. Step 3: Cross multiply
    19,328.20x = 28,980.56 × 9,455.12
  4. Step 4: Simplify right side
    19,328.20x = 274,014,672.47
  5. Step 5: Solve for x
    x = 274,014,672.47/19,328.20
  6. Step 6: Final answer
    x = 14,176.94

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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.