Home / 11,289.10-15,578.85-6,507.30

Finding the Fourth Proportional to 11,289.10, 15,578.85 and 6,507.30

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Solution

The fourth proportional to 11,289.10, 15,578.85 and 6,507.30 is: 8,980.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.10 : 15,578.85 = 6,507.30 : x
  2. Step 2: Convert to fraction form
    11,289.10/15,578.85 = 6,507.30/x
  3. Step 3: Cross multiply
    11,289.10x = 15,578.85 × 6,507.30
  4. Step 4: Simplify right side
    11,289.10x = 101,376,218.07
  5. Step 5: Solve for x
    x = 101,376,218.07/11,289.10
  6. Step 6: Final answer
    x = 8,980.01

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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.