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Finding the Fourth Proportional to 28,762.89, 39,705.04 and 19,336.92

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Solution

The fourth proportional to 28,762.89, 39,705.04 and 19,336.92 is: 26,693.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.89 : 39,705.04 = 19,336.92 : x
  2. Step 2: Convert to fraction form
    28,762.89/39,705.04 = 19,336.92/x
  3. Step 3: Cross multiply
    28,762.89x = 39,705.04 × 19,336.92
  4. Step 4: Simplify right side
    28,762.89x = 767,773,085.39
  5. Step 5: Solve for x
    x = 767,773,085.39/28,762.89
  6. Step 6: Final answer
    x = 26,693.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.