Home / 13,384.18-18,471.22-7,416.40

Finding the Fourth Proportional to 13,384.18, 18,471.22 and 7,416.40

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Solution

The fourth proportional to 13,384.18, 18,471.22 and 7,416.40 is: 10,235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.18 : 18,471.22 = 7,416.40 : x
  2. Step 2: Convert to fraction form
    13,384.18/18,471.22 = 7,416.40/x
  3. Step 3: Cross multiply
    13,384.18x = 18,471.22 × 7,416.40
  4. Step 4: Simplify right side
    13,384.18x = 136,989,956.01
  5. Step 5: Solve for x
    x = 136,989,956.01/13,384.18
  6. Step 6: Final answer
    x = 10,235.21

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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.