Home / 28,650,627.48-42,990,871.14-12,690,543

Finding the Fourth Proportional to 28,650,627.48, 42,990,871.14 and 12,690,543

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Solution

The fourth proportional to 28,650,627.48, 42,990,871.14 and 12,690,543 is: 19,042,427.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,650,627.48 : 42,990,871.14 = 12,690,543 : x
  2. Step 2: Convert to fraction form
    28,650,627.48/42,990,871.14 = 12,690,543/x
  3. Step 3: Cross multiply
    28,650,627.48x = 42,990,871.14 × 12,690,543
  4. Step 4: Simplify right side
    28,650,627.48x = 545,577,498,809,629
  5. Step 5: Solve for x
    x = 545,577,498,809,629/28,650,627.48
  6. Step 6: Final answer
    x = 19,042,427.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.