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Finding the Fourth Proportional to 18,357.98, 25,297.72 and 13,037.90

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Solution

The fourth proportional to 18,357.98, 25,297.72 and 13,037.90 is: 17,966.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.98 : 25,297.72 = 13,037.90 : x
  2. Step 2: Convert to fraction form
    18,357.98/25,297.72 = 13,037.90/x
  3. Step 3: Cross multiply
    18,357.98x = 25,297.72 × 13,037.90
  4. Step 4: Simplify right side
    18,357.98x = 329,828,984.50
  5. Step 5: Solve for x
    x = 329,828,984.50/18,357.98
  6. Step 6: Final answer
    x = 17,966.52

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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.