Home / 28,209.24-38,929.02-15,635.16

Finding the Fourth Proportional to 28,209.24, 38,929.02 and 15,635.16

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Solution

The fourth proportional to 28,209.24, 38,929.02 and 15,635.16 is: 21,576.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.24 : 38,929.02 = 15,635.16 : x
  2. Step 2: Convert to fraction form
    28,209.24/38,929.02 = 15,635.16/x
  3. Step 3: Cross multiply
    28,209.24x = 38,929.02 × 15,635.16
  4. Step 4: Simplify right side
    28,209.24x = 608,661,456.34
  5. Step 5: Solve for x
    x = 608,661,456.34/28,209.24
  6. Step 6: Final answer
    x = 21,576.67

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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.