Home / 15,633.36-21,574.71-8,918.64

Finding the Fourth Proportional to 15,633.36, 21,574.71 and 8,918.64

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Solution

The fourth proportional to 15,633.36, 21,574.71 and 8,918.64 is: 12,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,633.36 : 21,574.71 = 8,918.64 : x
  2. Step 2: Convert to fraction form
    15,633.36/21,574.71 = 8,918.64/x
  3. Step 3: Cross multiply
    15,633.36x = 21,574.71 × 8,918.64
  4. Step 4: Simplify right side
    15,633.36x = 192,417,071.59
  5. Step 5: Solve for x
    x = 192,417,071.59/15,633.36
  6. Step 6: Final answer
    x = 12,308.11

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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.