Home / 12,875,389.20-19,313,083.80-8,086,442.40

Finding the Fourth Proportional to 12,875,389.20, 19,313,083.80 and 8,086,442.40

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Solution

The fourth proportional to 12,875,389.20, 19,313,083.80 and 8,086,442.40 is: 12,129,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,875,389.20 : 19,313,083.80 = 8,086,442.40 : x
  2. Step 2: Convert to fraction form
    12,875,389.20/19,313,083.80 = 8,086,442.40/x
  3. Step 3: Cross multiply
    12,875,389.20x = 19,313,083.80 × 8,086,442.40
  4. Step 4: Simplify right side
    12,875,389.20x = 156,174,139,715,073.12
  5. Step 5: Solve for x
    x = 156,174,139,715,073.12/12,875,389.20
  6. Step 6: Final answer
    x = 12,129,663.60

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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.