Home / 28,427.76-39,231.52-15,852.50

Finding the Fourth Proportional to 28,427.76, 39,231.52 and 15,852.50

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Solution

The fourth proportional to 28,427.76, 39,231.52 and 15,852.50 is: 21,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.76 : 39,231.52 = 15,852.50 : x
  2. Step 2: Convert to fraction form
    28,427.76/39,231.52 = 15,852.50/x
  3. Step 3: Cross multiply
    28,427.76x = 39,231.52 × 15,852.50
  4. Step 4: Simplify right side
    28,427.76x = 621,917,670.80
  5. Step 5: Solve for x
    x = 621,917,670.80/28,427.76
  6. Step 6: Final answer
    x = 21,877.13

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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.