Home / 28,450.22-39,263.01-15,875.78

Finding the Fourth Proportional to 28,450.22, 39,263.01 and 15,875.78

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Solution

The fourth proportional to 28,450.22, 39,263.01 and 15,875.78 is: 21,909.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,450.22 : 39,263.01 = 15,875.78 : x
  2. Step 2: Convert to fraction form
    28,450.22/39,263.01 = 15,875.78/x
  3. Step 3: Cross multiply
    28,450.22x = 39,263.01 × 15,875.78
  4. Step 4: Simplify right side
    28,450.22x = 623,330,908.90
  5. Step 5: Solve for x
    x = 623,330,908.90/28,450.22
  6. Step 6: Final answer
    x = 21,909.53

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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.