Home / 13,219.81-19,838.57-4,899.90

Finding the Fourth Proportional to 13,219.81, 19,838.57 and 4,899.90

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Solution

The fourth proportional to 13,219.81, 19,838.57 and 4,899.90 is: 7,353.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.81 : 19,838.57 = 4,899.90 : x
  2. Step 2: Convert to fraction form
    13,219.81/19,838.57 = 4,899.90/x
  3. Step 3: Cross multiply
    13,219.81x = 19,838.57 × 4,899.90
  4. Step 4: Simplify right side
    13,219.81x = 97,206,909.95
  5. Step 5: Solve for x
    x = 97,206,909.95/13,219.81
  6. Step 6: Final answer
    x = 7,353.12

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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.