Home / 28,617.36-42,925.41-7,840.86

Finding the Fourth Proportional to 28,617.36, 42,925.41 and 7,840.86

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Solution

The fourth proportional to 28,617.36, 42,925.41 and 7,840.86 is: 11,761.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.36 : 42,925.41 = 7,840.86 : x
  2. Step 2: Convert to fraction form
    28,617.36/42,925.41 = 7,840.86/x
  3. Step 3: Cross multiply
    28,617.36x = 42,925.41 × 7,840.86
  4. Step 4: Simplify right side
    28,617.36x = 336,572,130.25
  5. Step 5: Solve for x
    x = 336,572,130.25/28,617.36
  6. Step 6: Final answer
    x = 11,761.12

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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.