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Finding the Fourth Proportional to 13,315.43, 18,376.18 and 7,652.02

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Solution

The fourth proportional to 13,315.43, 18,376.18 and 7,652.02 is: 10,560.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.43 : 18,376.18 = 7,652.02 : x
  2. Step 2: Convert to fraction form
    13,315.43/18,376.18 = 7,652.02/x
  3. Step 3: Cross multiply
    13,315.43x = 18,376.18 × 7,652.02
  4. Step 4: Simplify right side
    13,315.43x = 140,614,831.81
  5. Step 5: Solve for x
    x = 140,614,831.81/13,315.43
  6. Step 6: Final answer
    x = 10,560.30

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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.