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Finding the Fourth Proportional to 13,988.52, 19,303.53 and 7,615.14

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Solution

The fourth proportional to 13,988.52, 19,303.53 and 7,615.14 is: 10,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.52 : 19,303.53 = 7,615.14 : x
  2. Step 2: Convert to fraction form
    13,988.52/19,303.53 = 7,615.14/x
  3. Step 3: Cross multiply
    13,988.52x = 19,303.53 × 7,615.14
  4. Step 4: Simplify right side
    13,988.52x = 146,999,083.44
  5. Step 5: Solve for x
    x = 146,999,083.44/13,988.52
  6. Step 6: Final answer
    x = 10,508.55

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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.