Home / 12,313.72-16,990.95-7,008.63

Finding the Fourth Proportional to 12,313.72, 16,990.95 and 7,008.63

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Solution

The fourth proportional to 12,313.72, 16,990.95 and 7,008.63 is: 9,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,313.72 : 16,990.95 = 7,008.63 : x
  2. Step 2: Convert to fraction form
    12,313.72/16,990.95 = 7,008.63/x
  3. Step 3: Cross multiply
    12,313.72x = 16,990.95 × 7,008.63
  4. Step 4: Simplify right side
    12,313.72x = 119,083,281.90
  5. Step 5: Solve for x
    x = 119,083,281.90/12,313.72
  6. Step 6: Final answer
    x = 9,670.78

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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.