Home / 12,650.79-17,457.61-6,985.41

Finding the Fourth Proportional to 12,650.79, 17,457.61 and 6,985.41

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Solution

The fourth proportional to 12,650.79, 17,457.61 and 6,985.41 is: 9,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.79 : 17,457.61 = 6,985.41 : x
  2. Step 2: Convert to fraction form
    12,650.79/17,457.61 = 6,985.41/x
  3. Step 3: Cross multiply
    12,650.79x = 17,457.61 × 6,985.41
  4. Step 4: Simplify right side
    12,650.79x = 121,948,563.47
  5. Step 5: Solve for x
    x = 121,948,563.47/12,650.79
  6. Step 6: Final answer
    x = 9,639.60

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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.