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Finding the Fourth Proportional to 28,978.00, 39,987.44 and 17,646.24

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Solution

The fourth proportional to 28,978.00, 39,987.44 and 17,646.24 is: 24,350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978.00 : 39,987.44 = 17,646.24 : x
  2. Step 2: Convert to fraction form
    28,978.00/39,987.44 = 17,646.24/x
  3. Step 3: Cross multiply
    28,978.00x = 39,987.44 × 17,646.24
  4. Step 4: Simplify right side
    28,978.00x = 705,627,866.19
  5. Step 5: Solve for x
    x = 705,627,866.19/28,978.00
  6. Step 6: Final answer
    x = 24,350.47

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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.