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Finding the Fourth Proportional to 28,558.52, 42,848.03 and 12,762.23

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Solution

The fourth proportional to 28,558.52, 42,848.03 and 12,762.23 is: 19,147.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.52 : 42,848.03 = 12,762.23 : x
  2. Step 2: Convert to fraction form
    28,558.52/42,848.03 = 12,762.23/x
  3. Step 3: Cross multiply
    28,558.52x = 42,848.03 × 12,762.23
  4. Step 4: Simplify right side
    28,558.52x = 546,836,445.81
  5. Step 5: Solve for x
    x = 546,836,445.81/28,558.52
  6. Step 6: Final answer
    x = 19,147.92

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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.