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Finding the Fourth Proportional to 28,253.63, 42,381.26 and 7,477.13

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Solution

The fourth proportional to 28,253.63, 42,381.26 and 7,477.13 is: 11,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,253.63 : 42,381.26 = 7,477.13 : x
  2. Step 2: Convert to fraction form
    28,253.63/42,381.26 = 7,477.13/x
  3. Step 3: Cross multiply
    28,253.63x = 42,381.26 × 7,477.13
  4. Step 4: Simplify right side
    28,253.63x = 316,889,941.29
  5. Step 5: Solve for x
    x = 316,889,941.29/28,253.63
  6. Step 6: Final answer
    x = 11,215.90

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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.