Home / 20,746.07-28,621.40-12,774.45

Finding the Fourth Proportional to 20,746.07, 28,621.40 and 12,774.45

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Solution

The fourth proportional to 20,746.07, 28,621.40 and 12,774.45 is: 17,623.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.07 : 28,621.40 = 12,774.45 : x
  2. Step 2: Convert to fraction form
    20,746.07/28,621.40 = 12,774.45/x
  3. Step 3: Cross multiply
    20,746.07x = 28,621.40 × 12,774.45
  4. Step 4: Simplify right side
    20,746.07x = 365,622,643.23
  5. Step 5: Solve for x
    x = 365,622,643.23/20,746.07
  6. Step 6: Final answer
    x = 17,623.71

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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.