Home / 15,012,513.51-20,717,305.34-8,136,988.71

Finding the Fourth Proportional to 15,012,513.51, 20,717,305.34 and 8,136,988.71

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Solution

The fourth proportional to 15,012,513.51, 20,717,305.34 and 8,136,988.71 is: 11,229,064.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,012,513.51 : 20,717,305.34 = 8,136,988.71 : x
  2. Step 2: Convert to fraction form
    15,012,513.51/20,717,305.34 = 8,136,988.71/x
  3. Step 3: Cross multiply
    15,012,513.51x = 20,717,305.34 × 8,136,988.71
  4. Step 4: Simplify right side
    15,012,513.51x = 168,576,479,612,517.78
  5. Step 5: Solve for x
    x = 168,576,479,612,517.78/15,012,513.51
  6. Step 6: Final answer
    x = 11,229,064.31

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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.