Home / 13,315.86-19,954.77-9,778.11

Finding the Fourth Proportional to 13,315.86, 19,954.77 and 9,778.11

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Solution

The fourth proportional to 13,315.86, 19,954.77 and 9,778.11 is: 14,653.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.86 : 19,954.77 = 9,778.11 : x
  2. Step 2: Convert to fraction form
    13,315.86/19,954.77 = 9,778.11/x
  3. Step 3: Cross multiply
    13,315.86x = 19,954.77 × 9,778.11
  4. Step 4: Simplify right side
    13,315.86x = 195,119,887.19
  5. Step 5: Solve for x
    x = 195,119,887.19/13,315.86
  6. Step 6: Final answer
    x = 14,653.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.