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Finding the Fourth Proportional to 15,804.70, 21,810.91 and 9,434.99

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Solution

The fourth proportional to 15,804.70, 21,810.91 and 9,434.99 is: 13,020.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.70 : 21,810.91 = 9,434.99 : x
  2. Step 2: Convert to fraction form
    15,804.70/21,810.91 = 9,434.99/x
  3. Step 3: Cross multiply
    15,804.70x = 21,810.91 × 9,434.99
  4. Step 4: Simplify right side
    15,804.70x = 205,785,608.69
  5. Step 5: Solve for x
    x = 205,785,608.69/15,804.70
  6. Step 6: Final answer
    x = 13,020.54

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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.