Home / 18,786,865.10-28,139,807.91-12,688,060.14

Finding the Fourth Proportional to 18,786,865.10, 28,139,807.91 and 12,688,060.14

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Solution

The fourth proportional to 18,786,865.10, 28,139,807.91 and 12,688,060.14 is: 19,004,744.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786,865.10 : 28,139,807.91 = 12,688,060.14 : x
  2. Step 2: Convert to fraction form
    18,786,865.10/28,139,807.91 = 12,688,060.14/x
  3. Step 3: Cross multiply
    18,786,865.10x = 28,139,807.91 × 12,688,060.14
  4. Step 4: Simplify right side
    18,786,865.10x = 357,039,575,090,127.75
  5. Step 5: Solve for x
    x = 357,039,575,090,127.75/18,786,865.10
  6. Step 6: Final answer
    x = 19,004,744.71

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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.