Home / 28,268,871.20-42,403,306.80-15,528,672.80

Finding the Fourth Proportional to 28,268,871.20, 42,403,306.80 and 15,528,672.80

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Solution

The fourth proportional to 28,268,871.20, 42,403,306.80 and 15,528,672.80 is: 23,293,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268,871.20 : 42,403,306.80 = 15,528,672.80 : x
  2. Step 2: Convert to fraction form
    28,268,871.20/42,403,306.80 = 15,528,672.80/x
  3. Step 3: Cross multiply
    28,268,871.20x = 42,403,306.80 × 15,528,672.80
  4. Step 4: Simplify right side
    28,268,871.20x = 658,467,076,935,215
  5. Step 5: Solve for x
    x = 658,467,076,935,215/28,268,871.20
  6. Step 6: Final answer
    x = 23,293,009.20

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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.