Home / 20,653.56-30,980.50-5,071.32

Finding the Fourth Proportional to 20,653.56, 30,980.50 and 5,071.32

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Solution

The fourth proportional to 20,653.56, 30,980.50 and 5,071.32 is: 7,607.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.56 : 30,980.50 = 5,071.32 : x
  2. Step 2: Convert to fraction form
    20,653.56/30,980.50 = 5,071.32/x
  3. Step 3: Cross multiply
    20,653.56x = 30,980.50 × 5,071.32
  4. Step 4: Simplify right side
    20,653.56x = 157,112,029.26
  5. Step 5: Solve for x
    x = 157,112,029.26/20,653.56
  6. Step 6: Final answer
    x = 7,607.02

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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.