Home / 19,903.86-29,855.85-5,112.84

Finding the Fourth Proportional to 19,903.86, 29,855.85 and 5,112.84

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Solution

The fourth proportional to 19,903.86, 29,855.85 and 5,112.84 is: 7,669.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.86 : 29,855.85 = 5,112.84 : x
  2. Step 2: Convert to fraction form
    19,903.86/29,855.85 = 5,112.84/x
  3. Step 3: Cross multiply
    19,903.86x = 29,855.85 × 5,112.84
  4. Step 4: Simplify right side
    19,903.86x = 152,648,184.11
  5. Step 5: Solve for x
    x = 152,648,184.11/19,903.86
  6. Step 6: Final answer
    x = 7,669.28

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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.