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Finding the Fourth Proportional to 13,510.71, 20,271.87 and 7,263.45

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Solution

The fourth proportional to 13,510.71, 20,271.87 and 7,263.45 is: 10,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,510.71 : 20,271.87 = 7,263.45 : x
  2. Step 2: Convert to fraction form
    13,510.71/20,271.87 = 7,263.45/x
  3. Step 3: Cross multiply
    13,510.71x = 20,271.87 × 7,263.45
  4. Step 4: Simplify right side
    13,510.71x = 147,243,714.15
  5. Step 5: Solve for x
    x = 147,243,714.15/13,510.71
  6. Step 6: Final answer
    x = 10,898.30

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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.