Home / 13,056.18-18,017.23-7,390.81

Finding the Fourth Proportional to 13,056.18, 18,017.23 and 7,390.81

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Solution

The fourth proportional to 13,056.18, 18,017.23 and 7,390.81 is: 10,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,056.18 : 18,017.23 = 7,390.81 : x
  2. Step 2: Convert to fraction form
    13,056.18/18,017.23 = 7,390.81/x
  3. Step 3: Cross multiply
    13,056.18x = 18,017.23 × 7,390.81
  4. Step 4: Simplify right side
    13,056.18x = 133,161,923.66
  5. Step 5: Solve for x
    x = 133,161,923.66/13,056.18
  6. Step 6: Final answer
    x = 10,199.15

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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.