Home / 19,345.56-29,018.32-12,770.20

Finding the Fourth Proportional to 19,345.56, 29,018.32 and 12,770.20

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Solution

The fourth proportional to 19,345.56, 29,018.32 and 12,770.20 is: 19,155.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,345.56 : 29,018.32 = 12,770.20 : x
  2. Step 2: Convert to fraction form
    19,345.56/29,018.32 = 12,770.20/x
  3. Step 3: Cross multiply
    19,345.56x = 29,018.32 × 12,770.20
  4. Step 4: Simplify right side
    19,345.56x = 370,569,750.06
  5. Step 5: Solve for x
    x = 370,569,750.06/19,345.56
  6. Step 6: Final answer
    x = 19,155.29

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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.