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Finding the Fourth Proportional to 15,987.66, 23,980.47 and 4,893.30

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Solution

The fourth proportional to 15,987.66, 23,980.47 and 4,893.30 is: 7,339.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,987.66 : 23,980.47 = 4,893.30 : x
  2. Step 2: Convert to fraction form
    15,987.66/23,980.47 = 4,893.30/x
  3. Step 3: Cross multiply
    15,987.66x = 23,980.47 × 4,893.30
  4. Step 4: Simplify right side
    15,987.66x = 117,343,633.85
  5. Step 5: Solve for x
    x = 117,343,633.85/15,987.66
  6. Step 6: Final answer
    x = 7,339.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.