Home / 13,899.72-20,835-10,196.40

Finding the Fourth Proportional to 13,899.72, 20,835 and 10,196.40

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Solution

The fourth proportional to 13,899.72, 20,835 and 10,196.40 is: 15,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,899.72 : 20,835 = 10,196.40 : x
  2. Step 2: Convert to fraction form
    13,899.72/20,835 = 10,196.40/x
  3. Step 3: Cross multiply
    13,899.72x = 20,835 × 10,196.40
  4. Step 4: Simplify right side
    13,899.72x = 212,441,994
  5. Step 5: Solve for x
    x = 212,441,994/13,899.72
  6. Step 6: Final answer
    x = 15,283.90

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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.