Home / 15,420.76-23,119.62-7,210.84

Finding the Fourth Proportional to 15,420.76, 23,119.62 and 7,210.84

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Solution

The fourth proportional to 15,420.76, 23,119.62 and 7,210.84 is: 10,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.76 : 23,119.62 = 7,210.84 : x
  2. Step 2: Convert to fraction form
    15,420.76/23,119.62 = 7,210.84/x
  3. Step 3: Cross multiply
    15,420.76x = 23,119.62 × 7,210.84
  4. Step 4: Simplify right side
    15,420.76x = 166,711,880.68
  5. Step 5: Solve for x
    x = 166,711,880.68/15,420.76
  6. Step 6: Final answer
    x = 10,810.87

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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.