Home / 19,219.80-28,808.10-9,856.20

Finding the Fourth Proportional to 19,219.80, 28,808.10 and 9,856.20

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Solution

The fourth proportional to 19,219.80, 28,808.10 and 9,856.20 is: 14,773.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,219.80 : 28,808.10 = 9,856.20 : x
  2. Step 2: Convert to fraction form
    19,219.80/28,808.10 = 9,856.20/x
  3. Step 3: Cross multiply
    19,219.80x = 28,808.10 × 9,856.20
  4. Step 4: Simplify right side
    19,219.80x = 283,938,395.22
  5. Step 5: Solve for x
    x = 283,938,395.22/19,219.80
  6. Step 6: Final answer
    x = 14,773.22

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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.