Home / 13,078.76-18,048.47-7,110.58

Finding the Fourth Proportional to 13,078.76, 18,048.47 and 7,110.58

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Solution

The fourth proportional to 13,078.76, 18,048.47 and 7,110.58 is: 9,812.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.76 : 18,048.47 = 7,110.58 : x
  2. Step 2: Convert to fraction form
    13,078.76/18,048.47 = 7,110.58/x
  3. Step 3: Cross multiply
    13,078.76x = 18,048.47 × 7,110.58
  4. Step 4: Simplify right side
    13,078.76x = 128,335,089.81
  5. Step 5: Solve for x
    x = 128,335,089.81/13,078.76
  6. Step 6: Final answer
    x = 9,812.48

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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.