Home / 20,900.02-31,355.22-10,374.98

Finding the Fourth Proportional to 20,900.02, 31,355.22 and 10,374.98

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Solution

The fourth proportional to 20,900.02, 31,355.22 and 10,374.98 is: 15,565.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.02 : 31,355.22 = 10,374.98 : x
  2. Step 2: Convert to fraction form
    20,900.02/31,355.22 = 10,374.98/x
  3. Step 3: Cross multiply
    20,900.02x = 31,355.22 × 10,374.98
  4. Step 4: Simplify right side
    20,900.02x = 325,309,780.40
  5. Step 5: Solve for x
    x = 325,309,780.40/20,900.02
  6. Step 6: Final answer
    x = 15,565.05

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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.