Home / 13,531.43-18,673.35-7,869.50

Finding the Fourth Proportional to 13,531.43, 18,673.35 and 7,869.50

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Solution

The fourth proportional to 13,531.43, 18,673.35 and 7,869.50 is: 10,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.43 : 18,673.35 = 7,869.50 : x
  2. Step 2: Convert to fraction form
    13,531.43/18,673.35 = 7,869.50/x
  3. Step 3: Cross multiply
    13,531.43x = 18,673.35 × 7,869.50
  4. Step 4: Simplify right side
    13,531.43x = 146,949,927.83
  5. Step 5: Solve for x
    x = 146,949,927.83/13,531.43
  6. Step 6: Final answer
    x = 10,859.90

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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.