Home / 20,275.72-30,420.08-9,746.50

Finding the Fourth Proportional to 20,275.72, 30,420.08 and 9,746.50

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Solution

The fourth proportional to 20,275.72, 30,420.08 and 9,746.50 is: 14,622.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.72 : 30,420.08 = 9,746.50 : x
  2. Step 2: Convert to fraction form
    20,275.72/30,420.08 = 9,746.50/x
  3. Step 3: Cross multiply
    20,275.72x = 30,420.08 × 9,746.50
  4. Step 4: Simplify right side
    20,275.72x = 296,489,184.94
  5. Step 5: Solve for x
    x = 296,489,184.94/20,275.72
  6. Step 6: Final answer
    x = 14,622.87

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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.