Home / 19,215.63-28,821.06-5,176.76

Finding the Fourth Proportional to 19,215.63, 28,821.06 and 5,176.76

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Solution

The fourth proportional to 19,215.63, 28,821.06 and 5,176.76 is: 7,764.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.63 : 28,821.06 = 5,176.76 : x
  2. Step 2: Convert to fraction form
    19,215.63/28,821.06 = 5,176.76/x
  3. Step 3: Cross multiply
    19,215.63x = 28,821.06 × 5,176.76
  4. Step 4: Simplify right side
    19,215.63x = 149,199,566.46
  5. Step 5: Solve for x
    x = 149,199,566.46/19,215.63
  6. Step 6: Final answer
    x = 7,764.49

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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.