Home / 15,869.98-21,904.49-9,159.60

Finding the Fourth Proportional to 15,869.98, 21,904.49 and 9,159.60

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Solution

The fourth proportional to 15,869.98, 21,904.49 and 9,159.60 is: 12,642.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.98 : 21,904.49 = 9,159.60 : x
  2. Step 2: Convert to fraction form
    15,869.98/21,904.49 = 9,159.60/x
  3. Step 3: Cross multiply
    15,869.98x = 21,904.49 × 9,159.60
  4. Step 4: Simplify right side
    15,869.98x = 200,636,366.60
  5. Step 5: Solve for x
    x = 200,636,366.60/15,869.98
  6. Step 6: Final answer
    x = 12,642.51

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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.