Home / 20,901.64-31,365.06-19,588.36

Finding the Fourth Proportional to 20,901.64, 31,365.06 and 19,588.36

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Solution

The fourth proportional to 20,901.64, 31,365.06 and 19,588.36 is: 29,394.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.64 : 31,365.06 = 19,588.36 : x
  2. Step 2: Convert to fraction form
    20,901.64/31,365.06 = 19,588.36/x
  3. Step 3: Cross multiply
    20,901.64x = 31,365.06 × 19,588.36
  4. Step 4: Simplify right side
    20,901.64x = 614,390,086.70
  5. Step 5: Solve for x
    x = 614,390,086.70/20,901.64
  6. Step 6: Final answer
    x = 29,394.35

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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.