Home / 13,539.06-18,688.61-9,304.15

Finding the Fourth Proportional to 13,539.06, 18,688.61 and 9,304.15

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Solution

The fourth proportional to 13,539.06, 18,688.61 and 9,304.15 is: 12,842.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.06 : 18,688.61 = 9,304.15 : x
  2. Step 2: Convert to fraction form
    13,539.06/18,688.61 = 9,304.15/x
  3. Step 3: Cross multiply
    13,539.06x = 18,688.61 × 9,304.15
  4. Step 4: Simplify right side
    13,539.06x = 173,881,607.27
  5. Step 5: Solve for x
    x = 173,881,607.27/13,539.06
  6. Step 6: Final answer
    x = 12,842.96

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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.