Home / 12,650.57-17,457.70-6,985.67

Finding the Fourth Proportional to 12,650.57, 17,457.70 and 6,985.67

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Solution

The fourth proportional to 12,650.57, 17,457.70 and 6,985.67 is: 9,640.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.57 : 17,457.70 = 6,985.67 : x
  2. Step 2: Convert to fraction form
    12,650.57/17,457.70 = 6,985.67/x
  3. Step 3: Cross multiply
    12,650.57x = 17,457.70 × 6,985.67
  4. Step 4: Simplify right side
    12,650.57x = 121,953,757.34
  5. Step 5: Solve for x
    x = 121,953,757.34/12,650.57
  6. Step 6: Final answer
    x = 9,640.18

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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.