Home / 15,145.22-20,897.91-8,430.67

Finding the Fourth Proportional to 15,145.22, 20,897.91 and 8,430.67

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Solution

The fourth proportional to 15,145.22, 20,897.91 and 8,430.67 is: 11,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.22 : 20,897.91 = 8,430.67 : x
  2. Step 2: Convert to fraction form
    15,145.22/20,897.91 = 8,430.67/x
  3. Step 3: Cross multiply
    15,145.22x = 20,897.91 × 8,430.67
  4. Step 4: Simplify right side
    15,145.22x = 176,183,382.90
  5. Step 5: Solve for x
    x = 176,183,382.90/15,145.22
  6. Step 6: Final answer
    x = 11,632.94

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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.