Home / 13,040.28-19,557.18-4,280.40

Finding the Fourth Proportional to 13,040.28, 19,557.18 and 4,280.40

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Solution

The fourth proportional to 13,040.28, 19,557.18 and 4,280.40 is: 6,419.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.28 : 19,557.18 = 4,280.40 : x
  2. Step 2: Convert to fraction form
    13,040.28/19,557.18 = 4,280.40/x
  3. Step 3: Cross multiply
    13,040.28x = 19,557.18 × 4,280.40
  4. Step 4: Simplify right side
    13,040.28x = 83,712,553.27
  5. Step 5: Solve for x
    x = 83,712,553.27/13,040.28
  6. Step 6: Final answer
    x = 6,419.54

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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.