Home / 15,869.58-21,901.38-9,155.50

Finding the Fourth Proportional to 15,869.58, 21,901.38 and 9,155.50

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Solution

The fourth proportional to 15,869.58, 21,901.38 and 9,155.50 is: 12,635.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.58 : 21,901.38 = 9,155.50 : x
  2. Step 2: Convert to fraction form
    15,869.58/21,901.38 = 9,155.50/x
  3. Step 3: Cross multiply
    15,869.58x = 21,901.38 × 9,155.50
  4. Step 4: Simplify right side
    15,869.58x = 200,518,084.59
  5. Step 5: Solve for x
    x = 200,518,084.59/15,869.58
  6. Step 6: Final answer
    x = 12,635.37

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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.