Home / 13,219.20-19,820.80-5,204.37

Finding the Fourth Proportional to 13,219.20, 19,820.80 and 5,204.37

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Solution

The fourth proportional to 13,219.20, 19,820.80 and 5,204.37 is: 7,803.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.20 : 19,820.80 = 5,204.37 : x
  2. Step 2: Convert to fraction form
    13,219.20/19,820.80 = 5,204.37/x
  3. Step 3: Cross multiply
    13,219.20x = 19,820.80 × 5,204.37
  4. Step 4: Simplify right side
    13,219.20x = 103,154,746.24
  5. Step 5: Solve for x
    x = 103,154,746.24/13,219.20
  6. Step 6: Final answer
    x = 7,803.40

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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.