Home / 20,689.19-31,032.15-7,544.51

Finding the Fourth Proportional to 20,689.19, 31,032.15 and 7,544.51

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Solution

The fourth proportional to 20,689.19, 31,032.15 and 7,544.51 is: 11,316.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.19 : 31,032.15 = 7,544.51 : x
  2. Step 2: Convert to fraction form
    20,689.19/31,032.15 = 7,544.51/x
  3. Step 3: Cross multiply
    20,689.19x = 31,032.15 × 7,544.51
  4. Step 4: Simplify right side
    20,689.19x = 234,122,210.84
  5. Step 5: Solve for x
    x = 234,122,210.84/20,689.19
  6. Step 6: Final answer
    x = 11,316.16

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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.