Home / 21,774.60-32,666.55-12,419.10

Finding the Fourth Proportional to 21,774.60, 32,666.55 and 12,419.10

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Solution

The fourth proportional to 21,774.60, 32,666.55 and 12,419.10 is: 18,631.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,774.60 : 32,666.55 = 12,419.10 : x
  2. Step 2: Convert to fraction form
    21,774.60/32,666.55 = 12,419.10/x
  3. Step 3: Cross multiply
    21,774.60x = 32,666.55 × 12,419.10
  4. Step 4: Simplify right side
    21,774.60x = 405,689,151.11
  5. Step 5: Solve for x
    x = 405,689,151.11/21,774.60
  6. Step 6: Final answer
    x = 18,631.30

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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.