Home / 28,343,934.08-39,112,133.85-15,784,039.86

Finding the Fourth Proportional to 28,343,934.08, 39,112,133.85 and 15,784,039.86

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Solution

The fourth proportional to 28,343,934.08, 39,112,133.85 and 15,784,039.86 is: 21,780,585.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343,934.08 : 39,112,133.85 = 15,784,039.86 : x
  2. Step 2: Convert to fraction form
    28,343,934.08/39,112,133.85 = 15,784,039.86/x
  3. Step 3: Cross multiply
    28,343,934.08x = 39,112,133.85 × 15,784,039.86
  4. Step 4: Simplify right side
    28,343,934.08x = 617,347,479,698,055.25
  5. Step 5: Solve for x
    x = 617,347,479,698,055.25/28,343,934.08
  6. Step 6: Final answer
    x = 21,780,585.51

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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.