Home / 13,056.13-18,018.35-7,390.90

Finding the Fourth Proportional to 13,056.13, 18,018.35 and 7,390.90

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Solution

The fourth proportional to 13,056.13, 18,018.35 and 7,390.90 is: 10,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.13 : 18,018.35 = 7,390.90 : x
  2. Step 2: Convert to fraction form
    13,056.13/18,018.35 = 7,390.90/x
  3. Step 3: Cross multiply
    13,056.13x = 18,018.35 × 7,390.90
  4. Step 4: Simplify right side
    13,056.13x = 133,171,823.02
  5. Step 5: Solve for x
    x = 133,171,823.02/13,056.13
  6. Step 6: Final answer
    x = 10,199.95

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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.