Home / 10,280.40-15,421.68-3,354

Finding the Fourth Proportional to 10,280.40, 15,421.68 and 3,354

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Solution

The fourth proportional to 10,280.40, 15,421.68 and 3,354 is: 5,031.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.40 : 15,421.68 = 3,354 : x
  2. Step 2: Convert to fraction form
    10,280.40/15,421.68 = 3,354/x
  3. Step 3: Cross multiply
    10,280.40x = 15,421.68 × 3,354
  4. Step 4: Simplify right side
    10,280.40x = 51,724,314.72
  5. Step 5: Solve for x
    x = 51,724,314.72/10,280.40
  6. Step 6: Final answer
    x = 5,031.35

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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.