Home / 13,580.97-20,364.51-5,681.36

Finding the Fourth Proportional to 13,580.97, 20,364.51 and 5,681.36

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Solution

The fourth proportional to 13,580.97, 20,364.51 and 5,681.36 is: 8,519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.97 : 20,364.51 = 5,681.36 : x
  2. Step 2: Convert to fraction form
    13,580.97/20,364.51 = 5,681.36/x
  3. Step 3: Cross multiply
    13,580.97x = 20,364.51 × 5,681.36
  4. Step 4: Simplify right side
    13,580.97x = 115,698,010.71
  5. Step 5: Solve for x
    x = 115,698,010.71/13,580.97
  6. Step 6: Final answer
    x = 8,519.13

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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.