Home / 15,515.76-21,410.14-9,055.60

Finding the Fourth Proportional to 15,515.76, 21,410.14 and 9,055.60

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Solution

The fourth proportional to 15,515.76, 21,410.14 and 9,055.60 is: 12,495.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.76 : 21,410.14 = 9,055.60 : x
  2. Step 2: Convert to fraction form
    15,515.76/21,410.14 = 9,055.60/x
  3. Step 3: Cross multiply
    15,515.76x = 21,410.14 × 9,055.60
  4. Step 4: Simplify right side
    15,515.76x = 193,881,663.78
  5. Step 5: Solve for x
    x = 193,881,663.78/15,515.76
  6. Step 6: Final answer
    x = 12,495.79

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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.