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Finding the Fourth Proportional to 15,001.81, 20,703.71 and 8,288.03

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Solution

The fourth proportional to 15,001.81, 20,703.71 and 8,288.03 is: 11,438.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,001.81 : 20,703.71 = 8,288.03 : x
  2. Step 2: Convert to fraction form
    15,001.81/20,703.71 = 8,288.03/x
  3. Step 3: Cross multiply
    15,001.81x = 20,703.71 × 8,288.03
  4. Step 4: Simplify right side
    15,001.81x = 171,592,866.07
  5. Step 5: Solve for x
    x = 171,592,866.07/15,001.81
  6. Step 6: Final answer
    x = 11,438.14

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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.