Home / 12,718.74-19,053.51-7,155.18

Finding the Fourth Proportional to 12,718.74, 19,053.51 and 7,155.18

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Solution

The fourth proportional to 12,718.74, 19,053.51 and 7,155.18 is: 10,718.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.74 : 19,053.51 = 7,155.18 : x
  2. Step 2: Convert to fraction form
    12,718.74/19,053.51 = 7,155.18/x
  3. Step 3: Cross multiply
    12,718.74x = 19,053.51 × 7,155.18
  4. Step 4: Simplify right side
    12,718.74x = 136,331,293.68
  5. Step 5: Solve for x
    x = 136,331,293.68/12,718.74
  6. Step 6: Final answer
    x = 10,718.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.