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Finding the Fourth Proportional to 21,913, 32,853.09 and 7,113.08

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Solution

The fourth proportional to 21,913, 32,853.09 and 7,113.08 is: 10,664.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913 : 32,853.09 = 7,113.08 : x
  2. Step 2: Convert to fraction form
    21,913/32,853.09 = 7,113.08/x
  3. Step 3: Cross multiply
    21,913x = 32,853.09 × 7,113.08
  4. Step 4: Simplify right side
    21,913x = 233,686,657.42
  5. Step 5: Solve for x
    x = 233,686,657.42/21,913
  6. Step 6: Final answer
    x = 10,664.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.