Home / 10,284.40-15,421.20-3,709.60

Finding the Fourth Proportional to 10,284.40, 15,421.20 and 3,709.60

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Solution

The fourth proportional to 10,284.40, 15,421.20 and 3,709.60 is: 5,562.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,284.40 : 15,421.20 = 3,709.60 : x
  2. Step 2: Convert to fraction form
    10,284.40/15,421.20 = 3,709.60/x
  3. Step 3: Cross multiply
    10,284.40x = 15,421.20 × 3,709.60
  4. Step 4: Simplify right side
    10,284.40x = 57,206,483.52
  5. Step 5: Solve for x
    x = 57,206,483.52/10,284.40
  6. Step 6: Final answer
    x = 5,562.45

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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.