Home / 12,871.17-19,300.59-6,289.65

Finding the Fourth Proportional to 12,871.17, 19,300.59 and 6,289.65

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Solution

The fourth proportional to 12,871.17, 19,300.59 and 6,289.65 is: 9,431.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.17 : 19,300.59 = 6,289.65 : x
  2. Step 2: Convert to fraction form
    12,871.17/19,300.59 = 6,289.65/x
  3. Step 3: Cross multiply
    12,871.17x = 19,300.59 × 6,289.65
  4. Step 4: Simplify right side
    12,871.17x = 121,393,955.89
  5. Step 5: Solve for x
    x = 121,393,955.89/12,871.17
  6. Step 6: Final answer
    x = 9,431.46

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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.