Home / 15,304.06-21,120.70-8,590.34

Finding the Fourth Proportional to 15,304.06, 21,120.70 and 8,590.34

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Solution

The fourth proportional to 15,304.06, 21,120.70 and 8,590.34 is: 11,855.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,304.06 : 21,120.70 = 8,590.34 : x
  2. Step 2: Convert to fraction form
    15,304.06/21,120.70 = 8,590.34/x
  3. Step 3: Cross multiply
    15,304.06x = 21,120.70 × 8,590.34
  4. Step 4: Simplify right side
    15,304.06x = 181,433,994.04
  5. Step 5: Solve for x
    x = 181,433,994.04/15,304.06
  6. Step 6: Final answer
    x = 11,855.29

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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.