Home / 28,006.32-38,648.84-15,431.07

Finding the Fourth Proportional to 28,006.32, 38,648.84 and 15,431.07

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Solution

The fourth proportional to 28,006.32, 38,648.84 and 15,431.07 is: 21,294.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006.32 : 38,648.84 = 15,431.07 : x
  2. Step 2: Convert to fraction form
    28,006.32/38,648.84 = 15,431.07/x
  3. Step 3: Cross multiply
    28,006.32x = 38,648.84 × 15,431.07
  4. Step 4: Simplify right side
    28,006.32x = 596,392,955.46
  5. Step 5: Solve for x
    x = 596,392,955.46/28,006.32
  6. Step 6: Final answer
    x = 21,294.94

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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.