Home / 20,689,632.37-28,549,544.69-12,740,911.16

Finding the Fourth Proportional to 20,689,632.37, 28,549,544.69 and 12,740,911.16

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Solution

The fourth proportional to 20,689,632.37, 28,549,544.69 and 12,740,911.16 is: 17,581,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,632.37 : 28,549,544.69 = 12,740,911.16 : x
  2. Step 2: Convert to fraction form
    20,689,632.37/28,549,544.69 = 12,740,911.16/x
  3. Step 3: Cross multiply
    20,689,632.37x = 28,549,544.69 × 12,740,911.16
  4. Step 4: Simplify right side
    20,689,632.37x = 363,747,212,490,035.19
  5. Step 5: Solve for x
    x = 363,747,212,490,035.19/20,689,632.37
  6. Step 6: Final answer
    x = 17,581,134.65

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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.