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Finding the Fourth Proportional to 18,437.58, 25,437.87 and 10,779.12

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Solution

The fourth proportional to 18,437.58, 25,437.87 and 10,779.12 is: 14,871.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,437.58 : 25,437.87 = 10,779.12 : x
  2. Step 2: Convert to fraction form
    18,437.58/25,437.87 = 10,779.12/x
  3. Step 3: Cross multiply
    18,437.58x = 25,437.87 × 10,779.12
  4. Step 4: Simplify right side
    18,437.58x = 274,197,853.27
  5. Step 5: Solve for x
    x = 274,197,853.27/18,437.58
  6. Step 6: Final answer
    x = 14,871.68

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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.