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Finding the Fourth Proportional to 28,594.35, 42,886.67 and 7,812.99

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Solution

The fourth proportional to 28,594.35, 42,886.67 and 7,812.99 is: 11,718.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,594.35 : 42,886.67 = 7,812.99 : x
  2. Step 2: Convert to fraction form
    28,594.35/42,886.67 = 7,812.99/x
  3. Step 3: Cross multiply
    28,594.35x = 42,886.67 × 7,812.99
  4. Step 4: Simplify right side
    28,594.35x = 335,073,084.78
  5. Step 5: Solve for x
    x = 335,073,084.78/28,594.35
  6. Step 6: Final answer
    x = 11,718.16

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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.