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Finding the Fourth Proportional to 18,368, 25,347.84 and 9,984.48

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Solution

The fourth proportional to 18,368, 25,347.84 and 9,984.48 is: 13,778.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368 : 25,347.84 = 9,984.48 : x
  2. Step 2: Convert to fraction form
    18,368/25,347.84 = 9,984.48/x
  3. Step 3: Cross multiply
    18,368x = 25,347.84 × 9,984.48
  4. Step 4: Simplify right side
    18,368x = 253,085,001.52
  5. Step 5: Solve for x
    x = 253,085,001.52/18,368
  6. Step 6: Final answer
    x = 13,778.58

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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.