Home / 13,904.81-19,187.85-8,240.10

Finding the Fourth Proportional to 13,904.81, 19,187.85 and 8,240.10

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Solution

The fourth proportional to 13,904.81, 19,187.85 and 8,240.10 is: 11,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,904.81 : 19,187.85 = 8,240.10 : x
  2. Step 2: Convert to fraction form
    13,904.81/19,187.85 = 8,240.10/x
  3. Step 3: Cross multiply
    13,904.81x = 19,187.85 × 8,240.10
  4. Step 4: Simplify right side
    13,904.81x = 158,109,802.79
  5. Step 5: Solve for x
    x = 158,109,802.79/13,904.81
  6. Step 6: Final answer
    x = 11,370.87

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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.