Home / 15,430.77-21,294.99-8,716.68

Finding the Fourth Proportional to 15,430.77, 21,294.99 and 8,716.68

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Solution

The fourth proportional to 15,430.77, 21,294.99 and 8,716.68 is: 12,029.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,430.77 : 21,294.99 = 8,716.68 : x
  2. Step 2: Convert to fraction form
    15,430.77/21,294.99 = 8,716.68/x
  3. Step 3: Cross multiply
    15,430.77x = 21,294.99 × 8,716.68
  4. Step 4: Simplify right side
    15,430.77x = 185,621,613.43
  5. Step 5: Solve for x
    x = 185,621,613.43/15,430.77
  6. Step 6: Final answer
    x = 12,029.32

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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.