Home / 12,908.10-19,337.85-6,646.80

Finding the Fourth Proportional to 12,908.10, 19,337.85 and 6,646.80

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Solution

The fourth proportional to 12,908.10, 19,337.85 and 6,646.80 is: 9,957.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.10 : 19,337.85 = 6,646.80 : x
  2. Step 2: Convert to fraction form
    12,908.10/19,337.85 = 6,646.80/x
  3. Step 3: Cross multiply
    12,908.10x = 19,337.85 × 6,646.80
  4. Step 4: Simplify right side
    12,908.10x = 128,534,821.38
  5. Step 5: Solve for x
    x = 128,534,821.38/12,908.10
  6. Step 6: Final answer
    x = 9,957.69

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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.