Home / 13,668.02-18,861.93-7,699.78

Finding the Fourth Proportional to 13,668.02, 18,861.93 and 7,699.78

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Solution

The fourth proportional to 13,668.02, 18,861.93 and 7,699.78 is: 10,625.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.02 : 18,861.93 = 7,699.78 : x
  2. Step 2: Convert to fraction form
    13,668.02/18,861.93 = 7,699.78/x
  3. Step 3: Cross multiply
    13,668.02x = 18,861.93 × 7,699.78
  4. Step 4: Simplify right side
    13,668.02x = 145,232,787.40
  5. Step 5: Solve for x
    x = 145,232,787.40/13,668.02
  6. Step 6: Final answer
    x = 10,625.74

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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.