Home / 21,202.08-31,802.31-8,718.63

Finding the Fourth Proportional to 21,202.08, 31,802.31 and 8,718.63

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Solution

The fourth proportional to 21,202.08, 31,802.31 and 8,718.63 is: 13,077.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.08 : 31,802.31 = 8,718.63 : x
  2. Step 2: Convert to fraction form
    21,202.08/31,802.31 = 8,718.63/x
  3. Step 3: Cross multiply
    21,202.08x = 31,802.31 × 8,718.63
  4. Step 4: Simplify right side
    21,202.08x = 277,272,574.04
  5. Step 5: Solve for x
    x = 277,272,574.04/21,202.08
  6. Step 6: Final answer
    x = 13,077.61

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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.