Home / 22,902.40-31,612.32-13,345.12

Finding the Fourth Proportional to 22,902.40, 31,612.32 and 13,345.12

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Solution

The fourth proportional to 22,902.40, 31,612.32 and 13,345.12 is: 18,420.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,902.40 : 31,612.32 = 13,345.12 : x
  2. Step 2: Convert to fraction form
    22,902.40/31,612.32 = 13,345.12/x
  3. Step 3: Cross multiply
    22,902.40x = 31,612.32 × 13,345.12
  4. Step 4: Simplify right side
    22,902.40x = 421,870,203.88
  5. Step 5: Solve for x
    x = 421,870,203.88/22,902.40
  6. Step 6: Final answer
    x = 18,420.35

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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.