Home / 12,312.08-16,989.36-7,006.40

Finding the Fourth Proportional to 12,312.08, 16,989.36 and 7,006.40

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Solution

The fourth proportional to 12,312.08, 16,989.36 and 7,006.40 is: 9,668.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.08 : 16,989.36 = 7,006.40 : x
  2. Step 2: Convert to fraction form
    12,312.08/16,989.36 = 7,006.40/x
  3. Step 3: Cross multiply
    12,312.08x = 16,989.36 × 7,006.40
  4. Step 4: Simplify right side
    12,312.08x = 119,034,251.90
  5. Step 5: Solve for x
    x = 119,034,251.90/12,312.08
  6. Step 6: Final answer
    x = 9,668.09

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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.