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Finding the Fourth Proportional to 15,533.93, 21,438.93 and 9,245.63

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Solution

The fourth proportional to 15,533.93, 21,438.93 and 9,245.63 is: 12,760.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.93 : 21,438.93 = 9,245.63 : x
  2. Step 2: Convert to fraction form
    15,533.93/21,438.93 = 9,245.63/x
  3. Step 3: Cross multiply
    15,533.93x = 21,438.93 × 9,245.63
  4. Step 4: Simplify right side
    15,533.93x = 198,216,307.18
  5. Step 5: Solve for x
    x = 198,216,307.18/15,533.93
  6. Step 6: Final answer
    x = 12,760.22

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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.