Home / 13,318.64-18,374.14-9,342.36

Finding the Fourth Proportional to 13,318.64, 18,374.14 and 9,342.36

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Solution

The fourth proportional to 13,318.64, 18,374.14 and 9,342.36 is: 12,888.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.64 : 18,374.14 = 9,342.36 : x
  2. Step 2: Convert to fraction form
    13,318.64/18,374.14 = 9,342.36/x
  3. Step 3: Cross multiply
    13,318.64x = 18,374.14 × 9,342.36
  4. Step 4: Simplify right side
    13,318.64x = 171,657,830.57
  5. Step 5: Solve for x
    x = 171,657,830.57/13,318.64
  6. Step 6: Final answer
    x = 12,888.54

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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.