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Finding the Fourth Proportional to 28,547.63, 42,825.53 and 8,827.71

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Solution

The fourth proportional to 28,547.63, 42,825.53 and 8,827.71 is: 13,242.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.63 : 42,825.53 = 8,827.71 : x
  2. Step 2: Convert to fraction form
    28,547.63/42,825.53 = 8,827.71/x
  3. Step 3: Cross multiply
    28,547.63x = 42,825.53 × 8,827.71
  4. Step 4: Simplify right side
    28,547.63x = 378,051,315.30
  5. Step 5: Solve for x
    x = 378,051,315.30/28,547.63
  6. Step 6: Final answer
    x = 13,242.83

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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.