Home / 15,151.50-20,911.23-14,487.30

Finding the Fourth Proportional to 15,151.50, 20,911.23 and 14,487.30

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Solution

The fourth proportional to 15,151.50, 20,911.23 and 14,487.30 is: 19,994.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.50 : 20,911.23 = 14,487.30 : x
  2. Step 2: Convert to fraction form
    15,151.50/20,911.23 = 14,487.30/x
  3. Step 3: Cross multiply
    15,151.50x = 20,911.23 × 14,487.30
  4. Step 4: Simplify right side
    15,151.50x = 302,947,262.38
  5. Step 5: Solve for x
    x = 302,947,262.38/15,151.50
  6. Step 6: Final answer
    x = 19,994.54

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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.