Home / 12,920,920.86-17,830,725.84-7,339,128.24

Finding the Fourth Proportional to 12,920,920.86, 17,830,725.84 and 7,339,128.24

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Solution

The fourth proportional to 12,920,920.86, 17,830,725.84 and 7,339,128.24 is: 10,127,914.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,920.86 : 17,830,725.84 = 7,339,128.24 : x
  2. Step 2: Convert to fraction form
    12,920,920.86/17,830,725.84 = 7,339,128.24/x
  3. Step 3: Cross multiply
    12,920,920.86x = 17,830,725.84 × 7,339,128.24
  4. Step 4: Simplify right side
    12,920,920.86x = 130,861,983,552,041.72
  5. Step 5: Solve for x
    x = 130,861,983,552,041.72/12,920,920.86
  6. Step 6: Final answer
    x = 10,127,914.64

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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.