Home / 15,216,145.79-20,986,037.21-13,376,671.02

Finding the Fourth Proportional to 15,216,145.79, 20,986,037.21 and 13,376,671.02

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Solution

The fourth proportional to 15,216,145.79, 20,986,037.21 and 13,376,671.02 is: 18,449,042.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216,145.79 : 20,986,037.21 = 13,376,671.02 : x
  2. Step 2: Convert to fraction form
    15,216,145.79/20,986,037.21 = 13,376,671.02/x
  3. Step 3: Cross multiply
    15,216,145.79x = 20,986,037.21 × 13,376,671.02
  4. Step 4: Simplify right side
    15,216,145.79x = 280,723,315,805,090.31
  5. Step 5: Solve for x
    x = 280,723,315,805,090.31/15,216,145.79
  6. Step 6: Final answer
    x = 18,449,042.21

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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.