Home / 28,611.11-39,482.62-15,864.34

Finding the Fourth Proportional to 28,611.11, 39,482.62 and 15,864.34

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Solution

The fourth proportional to 28,611.11, 39,482.62 and 15,864.34 is: 21,892.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,611.11 : 39,482.62 = 15,864.34 : x
  2. Step 2: Convert to fraction form
    28,611.11/39,482.62 = 15,864.34/x
  3. Step 3: Cross multiply
    28,611.11x = 39,482.62 × 15,864.34
  4. Step 4: Simplify right side
    28,611.11x = 626,365,569.40
  5. Step 5: Solve for x
    x = 626,365,569.40/28,611.11
  6. Step 6: Final answer
    x = 21,892.39

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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.