Home / 13,696.02-18,900.54-7,408.40

Finding the Fourth Proportional to 13,696.02, 18,900.54 and 7,408.40

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Solution

The fourth proportional to 13,696.02, 18,900.54 and 7,408.40 is: 10,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,696.02 : 18,900.54 = 7,408.40 : x
  2. Step 2: Convert to fraction form
    13,696.02/18,900.54 = 7,408.40/x
  3. Step 3: Cross multiply
    13,696.02x = 18,900.54 × 7,408.40
  4. Step 4: Simplify right side
    13,696.02x = 140,022,666.03
  5. Step 5: Solve for x
    x = 140,022,666.03/13,696.02
  6. Step 6: Final answer
    x = 10,223.60

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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.