Home / 28,445.12-39,253.99-15,698.42

Finding the Fourth Proportional to 28,445.12, 39,253.99 and 15,698.42

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Solution

The fourth proportional to 28,445.12, 39,253.99 and 15,698.42 is: 21,663.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.12 : 39,253.99 = 15,698.42 : x
  2. Step 2: Convert to fraction form
    28,445.12/39,253.99 = 15,698.42/x
  3. Step 3: Cross multiply
    28,445.12x = 39,253.99 × 15,698.42
  4. Step 4: Simplify right side
    28,445.12x = 616,225,621.70
  5. Step 5: Solve for x
    x = 616,225,621.70/28,445.12
  6. Step 6: Final answer
    x = 21,663.67

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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.