Home / 21,142,431.20-31,713,646.80-14,765,139.20

Finding the Fourth Proportional to 21,142,431.20, 31,713,646.80 and 14,765,139.20

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Solution

The fourth proportional to 21,142,431.20, 31,713,646.80 and 14,765,139.20 is: 22,147,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142,431.20 : 31,713,646.80 = 14,765,139.20 : x
  2. Step 2: Convert to fraction form
    21,142,431.20/31,713,646.80 = 14,765,139.20/x
  3. Step 3: Cross multiply
    21,142,431.20x = 31,713,646.80 × 14,765,139.20
  4. Step 4: Simplify right side
    21,142,431.20x = 468,256,409,541,634.56
  5. Step 5: Solve for x
    x = 468,256,409,541,634.56/21,142,431.20
  6. Step 6: Final answer
    x = 22,147,708.80

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1.5x scale

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.