Home / 20,888.19-31,295.79-17,400.60

Finding the Fourth Proportional to 20,888.19, 31,295.79 and 17,400.60

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Solution

The fourth proportional to 20,888.19, 31,295.79 and 17,400.60 is: 26,070.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.19 : 31,295.79 = 17,400.60 : x
  2. Step 2: Convert to fraction form
    20,888.19/31,295.79 = 17,400.60/x
  3. Step 3: Cross multiply
    20,888.19x = 31,295.79 × 17,400.60
  4. Step 4: Simplify right side
    20,888.19x = 544,565,523.47
  5. Step 5: Solve for x
    x = 544,565,523.47/20,888.19
  6. Step 6: Final answer
    x = 26,070.50

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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.