Home / 15,349.20-21,219.67-15,208.86

Finding the Fourth Proportional to 15,349.20, 21,219.67 and 15,208.86

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Solution

The fourth proportional to 15,349.20, 21,219.67 and 15,208.86 is: 21,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.20 : 21,219.67 = 15,208.86 : x
  2. Step 2: Convert to fraction form
    15,349.20/21,219.67 = 15,208.86/x
  3. Step 3: Cross multiply
    15,349.20x = 21,219.67 × 15,208.86
  4. Step 4: Simplify right side
    15,349.20x = 322,727,088.86
  5. Step 5: Solve for x
    x = 322,727,088.86/15,349.20
  6. Step 6: Final answer
    x = 21,025.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.