Home / 15,546.99-21,458.32-9,880.63

Finding the Fourth Proportional to 15,546.99, 21,458.32 and 9,880.63

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Solution

The fourth proportional to 15,546.99, 21,458.32 and 9,880.63 is: 13,637.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,546.99 : 21,458.32 = 9,880.63 : x
  2. Step 2: Convert to fraction form
    15,546.99/21,458.32 = 9,880.63/x
  3. Step 3: Cross multiply
    15,546.99x = 21,458.32 × 9,880.63
  4. Step 4: Simplify right side
    15,546.99x = 212,021,762.70
  5. Step 5: Solve for x
    x = 212,021,762.70/15,546.99
  6. Step 6: Final answer
    x = 13,637.48

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Double scale
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Similar ratio
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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.