Home / 13,376.10-18,458.73-7,407.75

Finding the Fourth Proportional to 13,376.10, 18,458.73 and 7,407.75

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Solution

The fourth proportional to 13,376.10, 18,458.73 and 7,407.75 is: 10,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.10 : 18,458.73 = 7,407.75 : x
  2. Step 2: Convert to fraction form
    13,376.10/18,458.73 = 7,407.75/x
  3. Step 3: Cross multiply
    13,376.10x = 18,458.73 × 7,407.75
  4. Step 4: Simplify right side
    13,376.10x = 136,737,657.16
  5. Step 5: Solve for x
    x = 136,737,657.16/13,376.10
  6. Step 6: Final answer
    x = 10,222.54

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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.