Home / 28,711-39,620.46-15,964.21

Finding the Fourth Proportional to 28,711, 39,620.46 and 15,964.21

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Solution

The fourth proportional to 28,711, 39,620.46 and 15,964.21 is: 22,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,711 : 39,620.46 = 15,964.21 : x
  2. Step 2: Convert to fraction form
    28,711/39,620.46 = 15,964.21/x
  3. Step 3: Cross multiply
    28,711x = 39,620.46 × 15,964.21
  4. Step 4: Simplify right side
    28,711x = 632,509,343.74
  5. Step 5: Solve for x
    x = 632,509,343.74/28,711
  6. Step 6: Final answer
    x = 22,030.21

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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.