Home / 12,987,312.76-17,922,512.52-7,186,339

Finding the Fourth Proportional to 12,987,312.76, 17,922,512.52 and 7,186,339

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Solution

The fourth proportional to 12,987,312.76, 17,922,512.52 and 7,186,339 is: 9,917,159.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987,312.76 : 17,922,512.52 = 7,186,339 : x
  2. Step 2: Convert to fraction form
    12,987,312.76/17,922,512.52 = 7,186,339/x
  3. Step 3: Cross multiply
    12,987,312.76x = 17,922,512.52 × 7,186,339
  4. Step 4: Simplify right side
    12,987,312.76x = 128,797,250,700,464.28
  5. Step 5: Solve for x
    x = 128,797,250,700,464.28/12,987,312.76
  6. Step 6: Final answer
    x = 9,917,159.39

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1.5x scale

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.