Home / 12,913,155.54-17,820,960.59-7,111,935.81

Finding the Fourth Proportional to 12,913,155.54, 17,820,960.59 and 7,111,935.81

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Solution

The fourth proportional to 12,913,155.54, 17,820,960.59 and 7,111,935.81 is: 9,814,915.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913,155.54 : 17,820,960.59 = 7,111,935.81 : x
  2. Step 2: Convert to fraction form
    12,913,155.54/17,820,960.59 = 7,111,935.81/x
  3. Step 3: Cross multiply
    12,913,155.54x = 17,820,960.59 × 7,111,935.81
  4. Step 4: Simplify right side
    12,913,155.54x = 126,741,527,806,399.56
  5. Step 5: Solve for x
    x = 126,741,527,806,399.56/12,913,155.54
  6. Step 6: Final answer
    x = 9,814,915.29

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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.