Home / 13,045.71-19,519.77-7,761.45

Finding the Fourth Proportional to 13,045.71, 19,519.77 and 7,761.45

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Solution

The fourth proportional to 13,045.71, 19,519.77 and 7,761.45 is: 11,613.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,045.71 : 19,519.77 = 7,761.45 : x
  2. Step 2: Convert to fraction form
    13,045.71/19,519.77 = 7,761.45/x
  3. Step 3: Cross multiply
    13,045.71x = 19,519.77 × 7,761.45
  4. Step 4: Simplify right side
    13,045.71x = 151,501,718.87
  5. Step 5: Solve for x
    x = 151,501,718.87/13,045.71
  6. Step 6: Final answer
    x = 11,613.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.