Home / 28,539.88-39,384.63-15,964.63

Finding the Fourth Proportional to 28,539.88, 39,384.63 and 15,964.63

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Solution

The fourth proportional to 28,539.88, 39,384.63 and 15,964.63 is: 22,030.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.88 : 39,384.63 = 15,964.63 : x
  2. Step 2: Convert to fraction form
    28,539.88/39,384.63 = 15,964.63/x
  3. Step 3: Cross multiply
    28,539.88x = 39,384.63 × 15,964.63
  4. Step 4: Simplify right side
    28,539.88x = 628,760,947.18
  5. Step 5: Solve for x
    x = 628,760,947.18/28,539.88
  6. Step 6: Final answer
    x = 22,030.96

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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.