Home / 19,030.32-28,542.36-5,180.40

Finding the Fourth Proportional to 19,030.32, 28,542.36 and 5,180.40

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Solution

The fourth proportional to 19,030.32, 28,542.36 and 5,180.40 is: 7,769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,030.32 : 28,542.36 = 5,180.40 : x
  2. Step 2: Convert to fraction form
    19,030.32/28,542.36 = 5,180.40/x
  3. Step 3: Cross multiply
    19,030.32x = 28,542.36 × 5,180.40
  4. Step 4: Simplify right side
    19,030.32x = 147,860,841.74
  5. Step 5: Solve for x
    x = 147,860,841.74/19,030.32
  6. Step 6: Final answer
    x = 7,769.75

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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.