Home / 11,868.16-16,374.84-7,152.40

Finding the Fourth Proportional to 11,868.16, 16,374.84 and 7,152.40

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Solution

The fourth proportional to 11,868.16, 16,374.84 and 7,152.40 is: 9,868.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.16 : 16,374.84 = 7,152.40 : x
  2. Step 2: Convert to fraction form
    11,868.16/16,374.84 = 7,152.40/x
  3. Step 3: Cross multiply
    11,868.16x = 16,374.84 × 7,152.40
  4. Step 4: Simplify right side
    11,868.16x = 117,119,405.62
  5. Step 5: Solve for x
    x = 117,119,405.62/11,868.16
  6. Step 6: Final answer
    x = 9,868.37

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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.