Home / 12,417.48-17,135.60-7,112.76

Finding the Fourth Proportional to 12,417.48, 17,135.60 and 7,112.76

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Solution

The fourth proportional to 12,417.48, 17,135.60 and 7,112.76 is: 9,815.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.48 : 17,135.60 = 7,112.76 : x
  2. Step 2: Convert to fraction form
    12,417.48/17,135.60 = 7,112.76/x
  3. Step 3: Cross multiply
    12,417.48x = 17,135.60 × 7,112.76
  4. Step 4: Simplify right side
    12,417.48x = 121,881,410.26
  5. Step 5: Solve for x
    x = 121,881,410.26/12,417.48
  6. Step 6: Final answer
    x = 9,815.31

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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.