Home / 15,458.48-21,332.56-8,384.88

Finding the Fourth Proportional to 15,458.48, 21,332.56 and 8,384.88

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Solution

The fourth proportional to 15,458.48, 21,332.56 and 8,384.88 is: 11,571.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.48 : 21,332.56 = 8,384.88 : x
  2. Step 2: Convert to fraction form
    15,458.48/21,332.56 = 8,384.88/x
  3. Step 3: Cross multiply
    15,458.48x = 21,332.56 × 8,384.88
  4. Step 4: Simplify right side
    15,458.48x = 178,870,955.69
  5. Step 5: Solve for x
    x = 178,870,955.69/15,458.48
  6. Step 6: Final answer
    x = 11,571.06

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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.