Home / 20,070.28-30,111.95-7,591.32

Finding the Fourth Proportional to 20,070.28, 30,111.95 and 7,591.32

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Solution

The fourth proportional to 20,070.28, 30,111.95 and 7,591.32 is: 11,389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.28 : 30,111.95 = 7,591.32 : x
  2. Step 2: Convert to fraction form
    20,070.28/30,111.95 = 7,591.32/x
  3. Step 3: Cross multiply
    20,070.28x = 30,111.95 × 7,591.32
  4. Step 4: Simplify right side
    20,070.28x = 228,589,467.25
  5. Step 5: Solve for x
    x = 228,589,467.25/20,070.28
  6. Step 6: Final answer
    x = 11,389.45

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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.