Home / 13,739.34-18,938.16-9,261.66

Finding the Fourth Proportional to 13,739.34, 18,938.16 and 9,261.66

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Solution

The fourth proportional to 13,739.34, 18,938.16 and 9,261.66 is: 12,766.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,739.34 : 18,938.16 = 9,261.66 : x
  2. Step 2: Convert to fraction form
    13,739.34/18,938.16 = 9,261.66/x
  3. Step 3: Cross multiply
    13,739.34x = 18,938.16 × 9,261.66
  4. Step 4: Simplify right side
    13,739.34x = 175,398,798.95
  5. Step 5: Solve for x
    x = 175,398,798.95/13,739.34
  6. Step 6: Final answer
    x = 12,766.17

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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.