Home / 21,630,768-29,853,738.56-12,338,292.48

Finding the Fourth Proportional to 21,630,768, 29,853,738.56 and 12,338,292.48

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Solution

The fourth proportional to 21,630,768, 29,853,738.56 and 12,338,292.48 is: 17,028,713.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,630,768 : 29,853,738.56 = 12,338,292.48 : x
  2. Step 2: Convert to fraction form
    21,630,768/29,853,738.56 = 12,338,292.48/x
  3. Step 3: Cross multiply
    21,630,768x = 29,853,738.56 × 12,338,292.48
  4. Step 4: Simplify right side
    21,630,768x = 368,344,157,974,734
  5. Step 5: Solve for x
    x = 368,344,157,974,734/21,630,768
  6. Step 6: Final answer
    x = 17,028,713.82

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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.