Home / 13,159.93-18,154.87-7,851.66

Finding the Fourth Proportional to 13,159.93, 18,154.87 and 7,851.66

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Solution

The fourth proportional to 13,159.93, 18,154.87 and 7,851.66 is: 10,831.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.93 : 18,154.87 = 7,851.66 : x
  2. Step 2: Convert to fraction form
    13,159.93/18,154.87 = 7,851.66/x
  3. Step 3: Cross multiply
    13,159.93x = 18,154.87 × 7,851.66
  4. Step 4: Simplify right side
    13,159.93x = 142,545,866.58
  5. Step 5: Solve for x
    x = 142,545,866.58/13,159.93
  6. Step 6: Final answer
    x = 10,831.81

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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.