Home / 13,135.02-18,126.51-7,832.91

Finding the Fourth Proportional to 13,135.02, 18,126.51 and 7,832.91

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Solution

The fourth proportional to 13,135.02, 18,126.51 and 7,832.91 is: 10,809.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.02 : 18,126.51 = 7,832.91 : x
  2. Step 2: Convert to fraction form
    13,135.02/18,126.51 = 7,832.91/x
  3. Step 3: Cross multiply
    13,135.02x = 18,126.51 × 7,832.91
  4. Step 4: Simplify right side
    13,135.02x = 141,983,321.44
  5. Step 5: Solve for x
    x = 141,983,321.44/13,135.02
  6. Step 6: Final answer
    x = 10,809.52

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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.