Home / 12,718.77-19,052.30-7,718.18

Finding the Fourth Proportional to 12,718.77, 19,052.30 and 7,718.18

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Solution

The fourth proportional to 12,718.77, 19,052.30 and 7,718.18 is: 11,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.77 : 19,052.30 = 7,718.18 : x
  2. Step 2: Convert to fraction form
    12,718.77/19,052.30 = 7,718.18/x
  3. Step 3: Cross multiply
    12,718.77x = 19,052.30 × 7,718.18
  4. Step 4: Simplify right side
    12,718.77x = 147,048,946.96
  5. Step 5: Solve for x
    x = 147,048,946.96/12,718.77
  6. Step 6: Final answer
    x = 11,561.57

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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.