Home / 30,259.92-45,396.40-12,719.64

Finding the Fourth Proportional to 30,259.92, 45,396.40 and 12,719.64

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Solution

The fourth proportional to 30,259.92, 45,396.40 and 12,719.64 is: 19,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,259.92 : 45,396.40 = 12,719.64 : x
  2. Step 2: Convert to fraction form
    30,259.92/45,396.40 = 12,719.64/x
  3. Step 3: Cross multiply
    30,259.92x = 45,396.40 × 12,719.64
  4. Step 4: Simplify right side
    30,259.92x = 577,425,865.30
  5. Step 5: Solve for x
    x = 577,425,865.30/30,259.92
  6. Step 6: Final answer
    x = 19,082.20

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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.