Home / 20,886.69-31,293.54-17,399.10

Finding the Fourth Proportional to 20,886.69, 31,293.54 and 17,399.10

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Solution

The fourth proportional to 20,886.69, 31,293.54 and 17,399.10 is: 26,068.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.69 : 31,293.54 = 17,399.10 : x
  2. Step 2: Convert to fraction form
    20,886.69/31,293.54 = 17,399.10/x
  3. Step 3: Cross multiply
    20,886.69x = 31,293.54 × 17,399.10
  4. Step 4: Simplify right side
    20,886.69x = 544,479,431.81
  5. Step 5: Solve for x
    x = 544,479,431.81/20,886.69
  6. Step 6: Final answer
    x = 26,068.25

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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.