Home / 15,440.78-21,292.25-13,210.04

Finding the Fourth Proportional to 15,440.78, 21,292.25 and 13,210.04

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Solution

The fourth proportional to 15,440.78, 21,292.25 and 13,210.04 is: 18,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.78 : 21,292.25 = 13,210.04 : x
  2. Step 2: Convert to fraction form
    15,440.78/21,292.25 = 13,210.04/x
  3. Step 3: Cross multiply
    15,440.78x = 21,292.25 × 13,210.04
  4. Step 4: Simplify right side
    15,440.78x = 281,271,301.68
  5. Step 5: Solve for x
    x = 281,271,301.68/15,440.78
  6. Step 6: Final answer
    x = 18,216.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.