Home / 13,553.02-18,709.56-9,079.70

Finding the Fourth Proportional to 13,553.02, 18,709.56 and 9,079.70

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Solution

The fourth proportional to 13,553.02, 18,709.56 and 9,079.70 is: 12,534.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.02 : 18,709.56 = 9,079.70 : x
  2. Step 2: Convert to fraction form
    13,553.02/18,709.56 = 9,079.70/x
  3. Step 3: Cross multiply
    13,553.02x = 18,709.56 × 9,079.70
  4. Step 4: Simplify right side
    13,553.02x = 169,877,072.85
  5. Step 5: Solve for x
    x = 169,877,072.85/13,553.02
  6. Step 6: Final answer
    x = 12,534.26

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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.