Home / 28,280.07-42,395.81-11,629.71

Finding the Fourth Proportional to 28,280.07, 42,395.81 and 11,629.71

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Solution

The fourth proportional to 28,280.07, 42,395.81 and 11,629.71 is: 17,434.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.07 : 42,395.81 = 11,629.71 : x
  2. Step 2: Convert to fraction form
    28,280.07/42,395.81 = 11,629.71/x
  3. Step 3: Cross multiply
    28,280.07x = 42,395.81 × 11,629.71
  4. Step 4: Simplify right side
    28,280.07x = 493,050,917.37
  5. Step 5: Solve for x
    x = 493,050,917.37/28,280.07
  6. Step 6: Final answer
    x = 17,434.57

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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.