Home / 12,088.71-16,684.79-6,783.21

Finding the Fourth Proportional to 12,088.71, 16,684.79 and 6,783.21

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Solution

The fourth proportional to 12,088.71, 16,684.79 and 6,783.21 is: 9,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,088.71 : 16,684.79 = 6,783.21 : x
  2. Step 2: Convert to fraction form
    12,088.71/16,684.79 = 6,783.21/x
  3. Step 3: Cross multiply
    12,088.71x = 16,684.79 × 6,783.21
  4. Step 4: Simplify right side
    12,088.71x = 113,176,400.46
  5. Step 5: Solve for x
    x = 113,176,400.46/12,088.71
  6. Step 6: Final answer
    x = 9,362.16

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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.