Home / 20,927.03-28,868.59-13,365.41

Finding the Fourth Proportional to 20,927.03, 28,868.59 and 13,365.41

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Solution

The fourth proportional to 20,927.03, 28,868.59 and 13,365.41 is: 18,437.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.03 : 28,868.59 = 13,365.41 : x
  2. Step 2: Convert to fraction form
    20,927.03/28,868.59 = 13,365.41/x
  3. Step 3: Cross multiply
    20,927.03x = 28,868.59 × 13,365.41
  4. Step 4: Simplify right side
    20,927.03x = 385,840,541.47
  5. Step 5: Solve for x
    x = 385,840,541.47/20,927.03
  6. Step 6: Final answer
    x = 18,437.42

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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.