Home / 15,458.65-21,332.36-8,384.92

Finding the Fourth Proportional to 15,458.65, 21,332.36 and 8,384.92

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Solution

The fourth proportional to 15,458.65, 21,332.36 and 8,384.92 is: 11,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.65 : 21,332.36 = 8,384.92 : x
  2. Step 2: Convert to fraction form
    15,458.65/21,332.36 = 8,384.92/x
  3. Step 3: Cross multiply
    15,458.65x = 21,332.36 × 8,384.92
  4. Step 4: Simplify right side
    15,458.65x = 178,870,099.64
  5. Step 5: Solve for x
    x = 178,870,099.64/15,458.65
  6. Step 6: Final answer
    x = 11,570.88

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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.