Home / 28,263.74-39,002.01-15,687.50

Finding the Fourth Proportional to 28,263.74, 39,002.01 and 15,687.50

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Solution

The fourth proportional to 28,263.74, 39,002.01 and 15,687.50 is: 21,647.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.74 : 39,002.01 = 15,687.50 : x
  2. Step 2: Convert to fraction form
    28,263.74/39,002.01 = 15,687.50/x
  3. Step 3: Cross multiply
    28,263.74x = 39,002.01 × 15,687.50
  4. Step 4: Simplify right side
    28,263.74x = 611,844,031.88
  5. Step 5: Solve for x
    x = 611,844,031.88/28,263.74
  6. Step 6: Final answer
    x = 21,647.67

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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.