Home / 28,305.54-42,459.26-12,723.21

Finding the Fourth Proportional to 28,305.54, 42,459.26 and 12,723.21

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Solution

The fourth proportional to 28,305.54, 42,459.26 and 12,723.21 is: 19,085.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.54 : 42,459.26 = 12,723.21 : x
  2. Step 2: Convert to fraction form
    28,305.54/42,459.26 = 12,723.21/x
  3. Step 3: Cross multiply
    28,305.54x = 42,459.26 × 12,723.21
  4. Step 4: Simplify right side
    28,305.54x = 540,218,017.81
  5. Step 5: Solve for x
    x = 540,218,017.81/28,305.54
  6. Step 6: Final answer
    x = 19,085.24

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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.