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Finding the Fourth Proportional to 18,065.90, 24,929.93 and 9,999.11

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Solution

The fourth proportional to 18,065.90, 24,929.93 and 9,999.11 is: 13,798.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,065.90 : 24,929.93 = 9,999.11 : x
  2. Step 2: Convert to fraction form
    18,065.90/24,929.93 = 9,999.11/x
  3. Step 3: Cross multiply
    18,065.90x = 24,929.93 × 9,999.11
  4. Step 4: Simplify right side
    18,065.90x = 249,277,062.37
  5. Step 5: Solve for x
    x = 249,277,062.37/18,065.90
  6. Step 6: Final answer
    x = 13,798.21

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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.