Home / 30,273.80-45,428.54-12,742.28

Finding the Fourth Proportional to 30,273.80, 45,428.54 and 12,742.28

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Solution

The fourth proportional to 30,273.80, 45,428.54 and 12,742.28 is: 19,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,273.80 : 45,428.54 = 12,742.28 : x
  2. Step 2: Convert to fraction form
    30,273.80/45,428.54 = 12,742.28/x
  3. Step 3: Cross multiply
    30,273.80x = 45,428.54 × 12,742.28
  4. Step 4: Simplify right side
    30,273.80x = 578,863,176.67
  5. Step 5: Solve for x
    x = 578,863,176.67/30,273.80
  6. Step 6: Final answer
    x = 19,120.93

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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.