Home / 15,581.89-21,504.54-9,210.58

Finding the Fourth Proportional to 15,581.89, 21,504.54 and 9,210.58

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Solution

The fourth proportional to 15,581.89, 21,504.54 and 9,210.58 is: 12,711.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.89 : 21,504.54 = 9,210.58 : x
  2. Step 2: Convert to fraction form
    15,581.89/21,504.54 = 9,210.58/x
  3. Step 3: Cross multiply
    15,581.89x = 21,504.54 × 9,210.58
  4. Step 4: Simplify right side
    15,581.89x = 198,069,286.03
  5. Step 5: Solve for x
    x = 198,069,286.03/15,581.89
  6. Step 6: Final answer
    x = 12,711.51

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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.