Home / 19,919.48-29,880.30-10,047.20

Finding the Fourth Proportional to 19,919.48, 29,880.30 and 10,047.20

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Solution

The fourth proportional to 19,919.48, 29,880.30 and 10,047.20 is: 15,071.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.48 : 29,880.30 = 10,047.20 : x
  2. Step 2: Convert to fraction form
    19,919.48/29,880.30 = 10,047.20/x
  3. Step 3: Cross multiply
    19,919.48x = 29,880.30 × 10,047.20
  4. Step 4: Simplify right side
    19,919.48x = 300,213,350.16
  5. Step 5: Solve for x
    x = 300,213,350.16/19,919.48
  6. Step 6: Final answer
    x = 15,071.34

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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.