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Finding the Fourth Proportional to 21,363.80, 32,045.70 and 9,050.20

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Solution

The fourth proportional to 21,363.80, 32,045.70 and 9,050.20 is: 13,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.80 : 32,045.70 = 9,050.20 : x
  2. Step 2: Convert to fraction form
    21,363.80/32,045.70 = 9,050.20/x
  3. Step 3: Cross multiply
    21,363.80x = 32,045.70 × 9,050.20
  4. Step 4: Simplify right side
    21,363.80x = 290,019,994.14
  5. Step 5: Solve for x
    x = 290,019,994.14/21,363.80
  6. Step 6: Final answer
    x = 13,575.30

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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.