Home / 11,275.40-16,869.90-7,387.40

Finding the Fourth Proportional to 11,275.40, 16,869.90 and 7,387.40

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Solution

The fourth proportional to 11,275.40, 16,869.90 and 7,387.40 is: 11,052.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,275.40 : 16,869.90 = 7,387.40 : x
  2. Step 2: Convert to fraction form
    11,275.40/16,869.90 = 7,387.40/x
  3. Step 3: Cross multiply
    11,275.40x = 16,869.90 × 7,387.40
  4. Step 4: Simplify right side
    11,275.40x = 124,624,699.26
  5. Step 5: Solve for x
    x = 124,624,699.26/11,275.40
  6. Step 6: Final answer
    x = 11,052.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.