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Finding the Fourth Proportional to 28,465.61, 42,699.98 and 11,827.32

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Solution

The fourth proportional to 28,465.61, 42,699.98 and 11,827.32 is: 17,741.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,465.61 : 42,699.98 = 11,827.32 : x
  2. Step 2: Convert to fraction form
    28,465.61/42,699.98 = 11,827.32/x
  3. Step 3: Cross multiply
    28,465.61x = 42,699.98 × 11,827.32
  4. Step 4: Simplify right side
    28,465.61x = 505,026,490.65
  5. Step 5: Solve for x
    x = 505,026,490.65/28,465.61
  6. Step 6: Final answer
    x = 17,741.64

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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.