Home / 13,724.02-18,938.08-7,756.34

Finding the Fourth Proportional to 13,724.02, 18,938.08 and 7,756.34

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Solution

The fourth proportional to 13,724.02, 18,938.08 and 7,756.34 is: 10,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.02 : 18,938.08 = 7,756.34 : x
  2. Step 2: Convert to fraction form
    13,724.02/18,938.08 = 7,756.34/x
  3. Step 3: Cross multiply
    13,724.02x = 18,938.08 × 7,756.34
  4. Step 4: Simplify right side
    13,724.02x = 146,890,187.43
  5. Step 5: Solve for x
    x = 146,890,187.43/13,724.02
  6. Step 6: Final answer
    x = 10,703.15

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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.