Home / 28,422.02-42,620.07-13,637.90

Finding the Fourth Proportional to 28,422.02, 42,620.07 and 13,637.90

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Solution

The fourth proportional to 28,422.02, 42,620.07 and 13,637.90 is: 20,450.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,422.02 : 42,620.07 = 13,637.90 : x
  2. Step 2: Convert to fraction form
    28,422.02/42,620.07 = 13,637.90/x
  3. Step 3: Cross multiply
    28,422.02x = 42,620.07 × 13,637.90
  4. Step 4: Simplify right side
    28,422.02x = 581,248,184.46
  5. Step 5: Solve for x
    x = 581,248,184.46/28,422.02
  6. Step 6: Final answer
    x = 20,450.63

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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.