Home / 13,315.61-19,954.38-9,777.86

Finding the Fourth Proportional to 13,315.61, 19,954.38 and 9,777.86

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Solution

The fourth proportional to 13,315.61, 19,954.38 and 9,777.86 is: 14,652.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.61 : 19,954.38 = 9,777.86 : x
  2. Step 2: Convert to fraction form
    13,315.61/19,954.38 = 9,777.86/x
  3. Step 3: Cross multiply
    13,315.61x = 19,954.38 × 9,777.86
  4. Step 4: Simplify right side
    13,315.61x = 195,111,134.03
  5. Step 5: Solve for x
    x = 195,111,134.03/13,315.61
  6. Step 6: Final answer
    x = 14,652.81

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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.