Home / 15,506.77-21,401.39-15,084.58

Finding the Fourth Proportional to 15,506.77, 21,401.39 and 15,084.58

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Solution

The fourth proportional to 15,506.77, 21,401.39 and 15,084.58 is: 20,818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.77 : 21,401.39 = 15,084.58 : x
  2. Step 2: Convert to fraction form
    15,506.77/21,401.39 = 15,084.58/x
  3. Step 3: Cross multiply
    15,506.77x = 21,401.39 × 15,084.58
  4. Step 4: Simplify right side
    15,506.77x = 322,830,979.57
  5. Step 5: Solve for x
    x = 322,830,979.57/15,506.77
  6. Step 6: Final answer
    x = 20,818.71

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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.