Home / 28,812.18-39,776.46-19,907.55

Finding the Fourth Proportional to 28,812.18, 39,776.46 and 19,907.55

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Solution

The fourth proportional to 28,812.18, 39,776.46 and 19,907.55 is: 27,483.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,812.18 : 39,776.46 = 19,907.55 : x
  2. Step 2: Convert to fraction form
    28,812.18/39,776.46 = 19,907.55/x
  3. Step 3: Cross multiply
    28,812.18x = 39,776.46 × 19,907.55
  4. Step 4: Simplify right side
    28,812.18x = 791,851,866.27
  5. Step 5: Solve for x
    x = 791,851,866.27/28,812.18
  6. Step 6: Final answer
    x = 27,483.23

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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.