Home / 19,315.83-28,969.06-5,275.92

Finding the Fourth Proportional to 19,315.83, 28,969.06 and 5,275.92

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Solution

The fourth proportional to 19,315.83, 28,969.06 and 5,275.92 is: 7,912.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315.83 : 28,969.06 = 5,275.92 : x
  2. Step 2: Convert to fraction form
    19,315.83/28,969.06 = 5,275.92/x
  3. Step 3: Cross multiply
    19,315.83x = 28,969.06 × 5,275.92
  4. Step 4: Simplify right side
    19,315.83x = 152,838,397.74
  5. Step 5: Solve for x
    x = 152,838,397.74/19,315.83
  6. Step 6: Final answer
    x = 7,912.60

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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.