Home / 13,698.47-18,902.81-8,392.56

Finding the Fourth Proportional to 13,698.47, 18,902.81 and 8,392.56

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Solution

The fourth proportional to 13,698.47, 18,902.81 and 8,392.56 is: 11,581.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,698.47 : 18,902.81 = 8,392.56 : x
  2. Step 2: Convert to fraction form
    13,698.47/18,902.81 = 8,392.56/x
  3. Step 3: Cross multiply
    13,698.47x = 18,902.81 × 8,392.56
  4. Step 4: Simplify right side
    13,698.47x = 158,642,925.13
  5. Step 5: Solve for x
    x = 158,642,925.13/13,698.47
  6. Step 6: Final answer
    x = 11,581.07

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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.