Home / 30,790.39-42,498.72-20,064.67

Finding the Fourth Proportional to 30,790.39, 42,498.72 and 20,064.67

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Solution

The fourth proportional to 30,790.39, 42,498.72 and 20,064.67 is: 27,694.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,790.39 : 42,498.72 = 20,064.67 : x
  2. Step 2: Convert to fraction form
    30,790.39/42,498.72 = 20,064.67/x
  3. Step 3: Cross multiply
    30,790.39x = 42,498.72 × 20,064.67
  4. Step 4: Simplify right side
    30,790.39x = 852,722,792.22
  5. Step 5: Solve for x
    x = 852,722,792.22/30,790.39
  6. Step 6: Final answer
    x = 27,694.45

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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.