Home / 13,240.68-18,271.80-7,651.68

Finding the Fourth Proportional to 13,240.68, 18,271.80 and 7,651.68

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Solution

The fourth proportional to 13,240.68, 18,271.80 and 7,651.68 is: 10,559.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.68 : 18,271.80 = 7,651.68 : x
  2. Step 2: Convert to fraction form
    13,240.68/18,271.80 = 7,651.68/x
  3. Step 3: Cross multiply
    13,240.68x = 18,271.80 × 7,651.68
  4. Step 4: Simplify right side
    13,240.68x = 139,809,966.62
  5. Step 5: Solve for x
    x = 139,809,966.62/13,240.68
  6. Step 6: Final answer
    x = 10,559.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.