Home / 39,405.07-54,328.47-28,641.10

Finding the Fourth Proportional to 39,405.07, 54,328.47 and 28,641.10

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Solution

The fourth proportional to 39,405.07, 54,328.47 and 28,641.10 is: 39,487.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,405.07 : 54,328.47 = 28,641.10 : x
  2. Step 2: Convert to fraction form
    39,405.07/54,328.47 = 28,641.10/x
  3. Step 3: Cross multiply
    39,405.07x = 54,328.47 × 28,641.10
  4. Step 4: Simplify right side
    39,405.07x = 1,556,027,142.12
  5. Step 5: Solve for x
    x = 1,556,027,142.12/39,405.07
  6. Step 6: Final answer
    x = 39,487.99

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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.