Home / 21,709.80-32,564.70-18,437.40

Finding the Fourth Proportional to 21,709.80, 32,564.70 and 18,437.40

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Solution

The fourth proportional to 21,709.80, 32,564.70 and 18,437.40 is: 27,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,709.80 : 32,564.70 = 18,437.40 : x
  2. Step 2: Convert to fraction form
    21,709.80/32,564.70 = 18,437.40/x
  3. Step 3: Cross multiply
    21,709.80x = 32,564.70 × 18,437.40
  4. Step 4: Simplify right side
    21,709.80x = 600,408,399.78
  5. Step 5: Solve for x
    x = 600,408,399.78/21,709.80
  6. Step 6: Final answer
    x = 27,656.10

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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.