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Finding the Fourth Proportional to 12,357.53, 18,533.51 and 5,687.63

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Solution

The fourth proportional to 12,357.53, 18,533.51 and 5,687.63 is: 8,530.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.53 : 18,533.51 = 5,687.63 : x
  2. Step 2: Convert to fraction form
    12,357.53/18,533.51 = 5,687.63/x
  3. Step 3: Cross multiply
    12,357.53x = 18,533.51 × 5,687.63
  4. Step 4: Simplify right side
    12,357.53x = 105,411,747.48
  5. Step 5: Solve for x
    x = 105,411,747.48/12,357.53
  6. Step 6: Final answer
    x = 8,530.16

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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.