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Finding the Fourth Proportional to 18,054.90, 24,915.24 and 9,988.89

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Solution

The fourth proportional to 18,054.90, 24,915.24 and 9,988.89 is: 13,784.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,054.90 : 24,915.24 = 9,988.89 : x
  2. Step 2: Convert to fraction form
    18,054.90/24,915.24 = 9,988.89/x
  3. Step 3: Cross multiply
    18,054.90x = 24,915.24 × 9,988.89
  4. Step 4: Simplify right side
    18,054.90x = 248,875,498.25
  5. Step 5: Solve for x
    x = 248,875,498.25/18,054.90
  6. Step 6: Final answer
    x = 13,784.37

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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.