Home / 13,921.10-19,211.26-7,547.68

Finding the Fourth Proportional to 13,921.10, 19,211.26 and 7,547.68

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Solution

The fourth proportional to 13,921.10, 19,211.26 and 7,547.68 is: 10,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.10 : 19,211.26 = 7,547.68 : x
  2. Step 2: Convert to fraction form
    13,921.10/19,211.26 = 7,547.68/x
  3. Step 3: Cross multiply
    13,921.10x = 19,211.26 × 7,547.68
  4. Step 4: Simplify right side
    13,921.10x = 145,000,397.85
  5. Step 5: Solve for x
    x = 145,000,397.85/13,921.10
  6. Step 6: Final answer
    x = 10,415.87

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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.