Home / 12,320.91-16,985.90-9,294.68

Finding the Fourth Proportional to 12,320.91, 16,985.90 and 9,294.68

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Solution

The fourth proportional to 12,320.91, 16,985.90 and 9,294.68 is: 12,813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.91 : 16,985.90 = 9,294.68 : x
  2. Step 2: Convert to fraction form
    12,320.91/16,985.90 = 9,294.68/x
  3. Step 3: Cross multiply
    12,320.91x = 16,985.90 × 9,294.68
  4. Step 4: Simplify right side
    12,320.91x = 157,878,570.71
  5. Step 5: Solve for x
    x = 157,878,570.71/12,320.91
  6. Step 6: Final answer
    x = 12,813.87

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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.