Home / 28,208.36-38,927.78-15,633.32

Finding the Fourth Proportional to 28,208.36, 38,927.78 and 15,633.32

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Solution

The fourth proportional to 28,208.36, 38,927.78 and 15,633.32 is: 21,574.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,208.36 : 38,927.78 = 15,633.32 : x
  2. Step 2: Convert to fraction form
    28,208.36/38,927.78 = 15,633.32/x
  3. Step 3: Cross multiply
    28,208.36x = 38,927.78 × 15,633.32
  4. Step 4: Simplify right side
    28,208.36x = 608,570,441.63
  5. Step 5: Solve for x
    x = 608,570,441.63/28,208.36
  6. Step 6: Final answer
    x = 21,574.12

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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.