Home / 20,903.06-28,844.32-12,403.72

Finding the Fourth Proportional to 20,903.06, 28,844.32 and 12,403.72

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Solution

The fourth proportional to 20,903.06, 28,844.32 and 12,403.72 is: 17,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.06 : 28,844.32 = 12,403.72 : x
  2. Step 2: Convert to fraction form
    20,903.06/28,844.32 = 12,403.72/x
  3. Step 3: Cross multiply
    20,903.06x = 28,844.32 × 12,403.72
  4. Step 4: Simplify right side
    20,903.06x = 357,776,868.87
  5. Step 5: Solve for x
    x = 357,776,868.87/20,903.06
  6. Step 6: Final answer
    x = 17,116.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.