Home / 20,424.15-28,188.61-19,090.08

Finding the Fourth Proportional to 20,424.15, 28,188.61 and 19,090.08

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Solution

The fourth proportional to 20,424.15, 28,188.61 and 19,090.08 is: 26,347.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,424.15 : 28,188.61 = 19,090.08 : x
  2. Step 2: Convert to fraction form
    20,424.15/28,188.61 = 19,090.08/x
  3. Step 3: Cross multiply
    20,424.15x = 28,188.61 × 19,090.08
  4. Step 4: Simplify right side
    20,424.15x = 538,122,772.26
  5. Step 5: Solve for x
    x = 538,122,772.26/20,424.15
  6. Step 6: Final answer
    x = 26,347.38

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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.