Home / 12,430.70-17,148.60-7,392.10

Finding the Fourth Proportional to 12,430.70, 17,148.60 and 7,392.10

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Solution

The fourth proportional to 12,430.70, 17,148.60 and 7,392.10 is: 10,197.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.70 : 17,148.60 = 7,392.10 : x
  2. Step 2: Convert to fraction form
    12,430.70/17,148.60 = 7,392.10/x
  3. Step 3: Cross multiply
    12,430.70x = 17,148.60 × 7,392.10
  4. Step 4: Simplify right side
    12,430.70x = 126,764,166.06
  5. Step 5: Solve for x
    x = 126,764,166.06/12,430.70
  6. Step 6: Final answer
    x = 10,197.67

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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.