Home / 13,406.96-18,501.12-7,438.40

Finding the Fourth Proportional to 13,406.96, 18,501.12 and 7,438.40

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Solution

The fourth proportional to 13,406.96, 18,501.12 and 7,438.40 is: 10,264.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.96 : 18,501.12 = 7,438.40 : x
  2. Step 2: Convert to fraction form
    13,406.96/18,501.12 = 7,438.40/x
  3. Step 3: Cross multiply
    13,406.96x = 18,501.12 × 7,438.40
  4. Step 4: Simplify right side
    13,406.96x = 137,618,731.01
  5. Step 5: Solve for x
    x = 137,618,731.01/13,406.96
  6. Step 6: Final answer
    x = 10,264.72

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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.