Home / 12,798.51-19,197.77-4,478.81

Finding the Fourth Proportional to 12,798.51, 19,197.77 and 4,478.81

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Solution

The fourth proportional to 12,798.51, 19,197.77 and 4,478.81 is: 6,718.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.51 : 19,197.77 = 4,478.81 : x
  2. Step 2: Convert to fraction form
    12,798.51/19,197.77 = 4,478.81/x
  3. Step 3: Cross multiply
    12,798.51x = 19,197.77 × 4,478.81
  4. Step 4: Simplify right side
    12,798.51x = 85,983,045.87
  5. Step 5: Solve for x
    x = 85,983,045.87/12,798.51
  6. Step 6: Final answer
    x = 6,718.21

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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.