Home / 19,775.60-29,615.40-10,521.20

Finding the Fourth Proportional to 19,775.60, 29,615.40 and 10,521.20

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Solution

The fourth proportional to 19,775.60, 29,615.40 and 10,521.20 is: 15,756.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,775.60 : 29,615.40 = 10,521.20 : x
  2. Step 2: Convert to fraction form
    19,775.60/29,615.40 = 10,521.20/x
  3. Step 3: Cross multiply
    19,775.60x = 29,615.40 × 10,521.20
  4. Step 4: Simplify right side
    19,775.60x = 311,589,546.48
  5. Step 5: Solve for x
    x = 311,589,546.48/19,775.60
  6. Step 6: Final answer
    x = 15,756.26

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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.