Home / 39,029.08-53,860.13-21,124.23

Finding the Fourth Proportional to 39,029.08, 53,860.13 and 21,124.23

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Solution

The fourth proportional to 39,029.08, 53,860.13 and 21,124.23 is: 29,151.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,029.08 : 53,860.13 = 21,124.23 : x
  2. Step 2: Convert to fraction form
    39,029.08/53,860.13 = 21,124.23/x
  3. Step 3: Cross multiply
    39,029.08x = 53,860.13 × 21,124.23
  4. Step 4: Simplify right side
    39,029.08x = 1,137,753,773.95
  5. Step 5: Solve for x
    x = 1,137,753,773.95/39,029.08
  6. Step 6: Final answer
    x = 29,151.44

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Half scale
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Double scale
Find fourth proportional to 39,030.08, 53,861.51 and 21,125.23
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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.