Home / 15,738.40-21,714.60-9,770.32

Finding the Fourth Proportional to 15,738.40, 21,714.60 and 9,770.32

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Solution

The fourth proportional to 15,738.40, 21,714.60 and 9,770.32 is: 13,480.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,738.40 : 21,714.60 = 9,770.32 : x
  2. Step 2: Convert to fraction form
    15,738.40/21,714.60 = 9,770.32/x
  3. Step 3: Cross multiply
    15,738.40x = 21,714.60 × 9,770.32
  4. Step 4: Simplify right side
    15,738.40x = 212,158,590.67
  5. Step 5: Solve for x
    x = 212,158,590.67/15,738.40
  6. Step 6: Final answer
    x = 13,480.32

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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.