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Finding the Fourth Proportional to 21,903.94, 32,858.88 and 7,108.08

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Solution

The fourth proportional to 21,903.94, 32,858.88 and 7,108.08 is: 10,663.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.94 : 32,858.88 = 7,108.08 : x
  2. Step 2: Convert to fraction form
    21,903.94/32,858.88 = 7,108.08/x
  3. Step 3: Cross multiply
    21,903.94x = 32,858.88 × 7,108.08
  4. Step 4: Simplify right side
    21,903.94x = 233,563,547.75
  5. Step 5: Solve for x
    x = 233,563,547.75/21,903.94
  6. Step 6: Final answer
    x = 10,663.08

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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.