Home / 28,054.61-38,715.50-15,479.36

Finding the Fourth Proportional to 28,054.61, 38,715.50 and 15,479.36

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Solution

The fourth proportional to 28,054.61, 38,715.50 and 15,479.36 is: 21,361.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.61 : 38,715.50 = 15,479.36 : x
  2. Step 2: Convert to fraction form
    28,054.61/38,715.50 = 15,479.36/x
  3. Step 3: Cross multiply
    28,054.61x = 38,715.50 × 15,479.36
  4. Step 4: Simplify right side
    28,054.61x = 599,291,084.68
  5. Step 5: Solve for x
    x = 599,291,084.68/28,054.61
  6. Step 6: Final answer
    x = 21,361.59

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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.