Home / 20,746.19-28,621.59-12,774.58

Finding the Fourth Proportional to 20,746.19, 28,621.59 and 12,774.58

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Solution

The fourth proportional to 20,746.19, 28,621.59 and 12,774.58 is: 17,623.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.19 : 28,621.59 = 12,774.58 : x
  2. Step 2: Convert to fraction form
    20,746.19/28,621.59 = 12,774.58/x
  3. Step 3: Cross multiply
    20,746.19x = 28,621.59 × 12,774.58
  4. Step 4: Simplify right side
    20,746.19x = 365,628,671.72
  5. Step 5: Solve for x
    x = 365,628,671.72/20,746.19
  6. Step 6: Final answer
    x = 17,623.89

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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.