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Finding the Fourth Proportional to 28,588.53, 42,909.17 and 14,558.67

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Solution

The fourth proportional to 28,588.53, 42,909.17 and 14,558.67 is: 21,851.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,588.53 : 42,909.17 = 14,558.67 : x
  2. Step 2: Convert to fraction form
    28,588.53/42,909.17 = 14,558.67/x
  3. Step 3: Cross multiply
    28,588.53x = 42,909.17 × 14,558.67
  4. Step 4: Simplify right side
    28,588.53x = 624,700,373.21
  5. Step 5: Solve for x
    x = 624,700,373.21/28,588.53
  6. Step 6: Final answer
    x = 21,851.43

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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.