Home / 15,388.20-23,095.80-9,140.40

Finding the Fourth Proportional to 15,388.20, 23,095.80 and 9,140.40

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Solution

The fourth proportional to 15,388.20, 23,095.80 and 9,140.40 is: 13,718.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.20 : 23,095.80 = 9,140.40 : x
  2. Step 2: Convert to fraction form
    15,388.20/23,095.80 = 9,140.40/x
  3. Step 3: Cross multiply
    15,388.20x = 23,095.80 × 9,140.40
  4. Step 4: Simplify right side
    15,388.20x = 211,104,850.32
  5. Step 5: Solve for x
    x = 211,104,850.32/15,388.20
  6. Step 6: Final answer
    x = 13,718.62

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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.