Home / 13,988.07-20,971.83-6,588.36

Finding the Fourth Proportional to 13,988.07, 20,971.83 and 6,588.36

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Solution

The fourth proportional to 13,988.07, 20,971.83 and 6,588.36 is: 9,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.07 : 20,971.83 = 6,588.36 : x
  2. Step 2: Convert to fraction form
    13,988.07/20,971.83 = 6,588.36/x
  3. Step 3: Cross multiply
    13,988.07x = 20,971.83 × 6,588.36
  4. Step 4: Simplify right side
    13,988.07x = 138,169,965.90
  5. Step 5: Solve for x
    x = 138,169,965.90/13,988.07
  6. Step 6: Final answer
    x = 9,877.70

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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.