Home / 15,509.48-21,403.86-8,794.04

Finding the Fourth Proportional to 15,509.48, 21,403.86 and 8,794.04

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Solution

The fourth proportional to 15,509.48, 21,403.86 and 8,794.04 is: 12,136.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.48 : 21,403.86 = 8,794.04 : x
  2. Step 2: Convert to fraction form
    15,509.48/21,403.86 = 8,794.04/x
  3. Step 3: Cross multiply
    15,509.48x = 21,403.86 × 8,794.04
  4. Step 4: Simplify right side
    15,509.48x = 188,226,400.99
  5. Step 5: Solve for x
    x = 188,226,400.99/15,509.48
  6. Step 6: Final answer
    x = 12,136.22

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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.