Home / 13,281.02-18,327.13-7,311.54

Finding the Fourth Proportional to 13,281.02, 18,327.13 and 7,311.54

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Solution

The fourth proportional to 13,281.02, 18,327.13 and 7,311.54 is: 10,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.02 : 18,327.13 = 7,311.54 : x
  2. Step 2: Convert to fraction form
    13,281.02/18,327.13 = 7,311.54/x
  3. Step 3: Cross multiply
    13,281.02x = 18,327.13 × 7,311.54
  4. Step 4: Simplify right side
    13,281.02x = 133,999,507.52
  5. Step 5: Solve for x
    x = 133,999,507.52/13,281.02
  6. Step 6: Final answer
    x = 10,089.55

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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.