Home / 13,240.16-18,271.41-7,271.99

Finding the Fourth Proportional to 13,240.16, 18,271.41 and 7,271.99

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Solution

The fourth proportional to 13,240.16, 18,271.41 and 7,271.99 is: 10,035.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.16 : 18,271.41 = 7,271.99 : x
  2. Step 2: Convert to fraction form
    13,240.16/18,271.41 = 7,271.99/x
  3. Step 3: Cross multiply
    13,240.16x = 18,271.41 × 7,271.99
  4. Step 4: Simplify right side
    13,240.16x = 132,869,510.81
  5. Step 5: Solve for x
    x = 132,869,510.81/13,240.16
  6. Step 6: Final answer
    x = 10,035.34

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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.