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Finding the Fourth Proportional to 28,368.60, 42,555 and 9,641.04

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Solution

The fourth proportional to 28,368.60, 42,555 and 9,641.04 is: 14,462.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.60 : 42,555 = 9,641.04 : x
  2. Step 2: Convert to fraction form
    28,368.60/42,555 = 9,641.04/x
  3. Step 3: Cross multiply
    28,368.60x = 42,555 × 9,641.04
  4. Step 4: Simplify right side
    28,368.60x = 410,274,457.20
  5. Step 5: Solve for x
    x = 410,274,457.20/28,368.60
  6. Step 6: Final answer
    x = 14,462.27

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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.