Home / 12,871.17-17,772.55-10,345.19

Finding the Fourth Proportional to 12,871.17, 17,772.55 and 10,345.19

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Solution

The fourth proportional to 12,871.17, 17,772.55 and 10,345.19 is: 14,284.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,871.17 : 17,772.55 = 10,345.19 : x
  2. Step 2: Convert to fraction form
    12,871.17/17,772.55 = 10,345.19/x
  3. Step 3: Cross multiply
    12,871.17x = 17,772.55 × 10,345.19
  4. Step 4: Simplify right side
    12,871.17x = 183,860,291.81
  5. Step 5: Solve for x
    x = 183,860,291.81/12,871.17
  6. Step 6: Final answer
    x = 14,284.66

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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.