Home / 10,620.90-15,931.95-3,225.60

Finding the Fourth Proportional to 10,620.90, 15,931.95 and 3,225.60

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Solution

The fourth proportional to 10,620.90, 15,931.95 and 3,225.60 is: 4,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.90 : 15,931.95 = 3,225.60 : x
  2. Step 2: Convert to fraction form
    10,620.90/15,931.95 = 3,225.60/x
  3. Step 3: Cross multiply
    10,620.90x = 15,931.95 × 3,225.60
  4. Step 4: Simplify right side
    10,620.90x = 51,390,097.92
  5. Step 5: Solve for x
    x = 51,390,097.92/10,620.90
  6. Step 6: Final answer
    x = 4,838.58

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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.