Home / 12,920,079.59-17,824,107.86-7,690,155.02

Finding the Fourth Proportional to 12,920,079.59, 17,824,107.86 and 7,690,155.02

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Solution

The fourth proportional to 12,920,079.59, 17,824,107.86 and 7,690,155.02 is: 10,609,079.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,920,079.59 : 17,824,107.86 = 7,690,155.02 : x
  2. Step 2: Convert to fraction form
    12,920,079.59/17,824,107.86 = 7,690,155.02/x
  3. Step 3: Cross multiply
    12,920,079.59x = 17,824,107.86 × 7,690,155.02
  4. Step 4: Simplify right side
    12,920,079.59x = 137,070,152,409,029.14
  5. Step 5: Solve for x
    x = 137,070,152,409,029.14/12,920,079.59
  6. Step 6: Final answer
    x = 10,609,079.57

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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.