Home / 13,215.08-19,822.60-7,291.68

Finding the Fourth Proportional to 13,215.08, 19,822.60 and 7,291.68

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Solution

The fourth proportional to 13,215.08, 19,822.60 and 7,291.68 is: 10,937.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.08 : 19,822.60 = 7,291.68 : x
  2. Step 2: Convert to fraction form
    13,215.08/19,822.60 = 7,291.68/x
  3. Step 3: Cross multiply
    13,215.08x = 19,822.60 × 7,291.68
  4. Step 4: Simplify right side
    13,215.08x = 144,540,055.97
  5. Step 5: Solve for x
    x = 144,540,055.97/13,215.08
  6. Step 6: Final answer
    x = 10,937.51

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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.