Home / 15,997.20-23,977.80-7,681.20

Finding the Fourth Proportional to 15,997.20, 23,977.80 and 7,681.20

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Solution

The fourth proportional to 15,997.20, 23,977.80 and 7,681.20 is: 11,513.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,997.20 : 23,977.80 = 7,681.20 : x
  2. Step 2: Convert to fraction form
    15,997.20/23,977.80 = 7,681.20/x
  3. Step 3: Cross multiply
    15,997.20x = 23,977.80 × 7,681.20
  4. Step 4: Simplify right side
    15,997.20x = 184,178,277.36
  5. Step 5: Solve for x
    x = 184,178,277.36/15,997.20
  6. Step 6: Final answer
    x = 11,513.16

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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.