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Finding the Fourth Proportional to 28,646.58, 42,969.60 and 8,925.30

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Solution

The fourth proportional to 28,646.58, 42,969.60 and 8,925.30 is: 13,387.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,646.58 : 42,969.60 = 8,925.30 : x
  2. Step 2: Convert to fraction form
    28,646.58/42,969.60 = 8,925.30/x
  3. Step 3: Cross multiply
    28,646.58x = 42,969.60 × 8,925.30
  4. Step 4: Simplify right side
    28,646.58x = 383,516,570.88
  5. Step 5: Solve for x
    x = 383,516,570.88/28,646.58
  6. Step 6: Final answer
    x = 13,387.87

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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.