Home / 28,375.56-39,156.75-15,799.50

Finding the Fourth Proportional to 28,375.56, 39,156.75 and 15,799.50

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Solution

The fourth proportional to 28,375.56, 39,156.75 and 15,799.50 is: 21,802.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.56 : 39,156.75 = 15,799.50 : x
  2. Step 2: Convert to fraction form
    28,375.56/39,156.75 = 15,799.50/x
  3. Step 3: Cross multiply
    28,375.56x = 39,156.75 × 15,799.50
  4. Step 4: Simplify right side
    28,375.56x = 618,657,071.63
  5. Step 5: Solve for x
    x = 618,657,071.63/28,375.56
  6. Step 6: Final answer
    x = 21,802.46

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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.