Home / 12,480.04-18,718.14-4,160.20

Finding the Fourth Proportional to 12,480.04, 18,718.14 and 4,160.20

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Solution

The fourth proportional to 12,480.04, 18,718.14 and 4,160.20 is: 6,239.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.04 : 18,718.14 = 4,160.20 : x
  2. Step 2: Convert to fraction form
    12,480.04/18,718.14 = 4,160.20/x
  3. Step 3: Cross multiply
    12,480.04x = 18,718.14 × 4,160.20
  4. Step 4: Simplify right side
    12,480.04x = 77,871,206.03
  5. Step 5: Solve for x
    x = 77,871,206.03/12,480.04
  6. Step 6: Final answer
    x = 6,239.66

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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.