Home / 12,938.93-17,852.77-7,905.18

Finding the Fourth Proportional to 12,938.93, 17,852.77 and 7,905.18

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Solution

The fourth proportional to 12,938.93, 17,852.77 and 7,905.18 is: 10,907.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.93 : 17,852.77 = 7,905.18 : x
  2. Step 2: Convert to fraction form
    12,938.93/17,852.77 = 7,905.18/x
  3. Step 3: Cross multiply
    12,938.93x = 17,852.77 × 7,905.18
  4. Step 4: Simplify right side
    12,938.93x = 141,129,360.35
  5. Step 5: Solve for x
    x = 141,129,360.35/12,938.93
  6. Step 6: Final answer
    x = 10,907.34

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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.