Home / 15,813.86-23,719.98-4,720.64

Finding the Fourth Proportional to 15,813.86, 23,719.98 and 4,720.64

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Solution

The fourth proportional to 15,813.86, 23,719.98 and 4,720.64 is: 7,080.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.86 : 23,719.98 = 4,720.64 : x
  2. Step 2: Convert to fraction form
    15,813.86/23,719.98 = 4,720.64/x
  3. Step 3: Cross multiply
    15,813.86x = 23,719.98 × 4,720.64
  4. Step 4: Simplify right side
    15,813.86x = 111,973,486.39
  5. Step 5: Solve for x
    x = 111,973,486.39/15,813.86
  6. Step 6: Final answer
    x = 7,080.72

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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.