Home / 13,988.07-19,304.15-8,020.31

Finding the Fourth Proportional to 13,988.07, 19,304.15 and 8,020.31

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Solution

The fourth proportional to 13,988.07, 19,304.15 and 8,020.31 is: 11,068.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.07 : 19,304.15 = 8,020.31 : x
  2. Step 2: Convert to fraction form
    13,988.07/19,304.15 = 8,020.31/x
  3. Step 3: Cross multiply
    13,988.07x = 19,304.15 × 8,020.31
  4. Step 4: Simplify right side
    13,988.07x = 154,825,130.66
  5. Step 5: Solve for x
    x = 154,825,130.66/13,988.07
  6. Step 6: Final answer
    x = 11,068.37

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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.