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Finding the Fourth Proportional to 12,901.50, 17,804.07 and 7,312.50

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Solution

The fourth proportional to 12,901.50, 17,804.07 and 7,312.50 is: 10,091.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.50 : 17,804.07 = 7,312.50 : x
  2. Step 2: Convert to fraction form
    12,901.50/17,804.07 = 7,312.50/x
  3. Step 3: Cross multiply
    12,901.50x = 17,804.07 × 7,312.50
  4. Step 4: Simplify right side
    12,901.50x = 130,192,261.88
  5. Step 5: Solve for x
    x = 130,192,261.88/12,901.50
  6. Step 6: Final answer
    x = 10,091.25

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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.