Home / 12,888.72-19,335.51-7,042.14

Finding the Fourth Proportional to 12,888.72, 19,335.51 and 7,042.14

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Solution

The fourth proportional to 12,888.72, 19,335.51 and 7,042.14 is: 10,564.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.72 : 19,335.51 = 7,042.14 : x
  2. Step 2: Convert to fraction form
    12,888.72/19,335.51 = 7,042.14/x
  3. Step 3: Cross multiply
    12,888.72x = 19,335.51 × 7,042.14
  4. Step 4: Simplify right side
    12,888.72x = 136,163,368.39
  5. Step 5: Solve for x
    x = 136,163,368.39/12,888.72
  6. Step 6: Final answer
    x = 10,564.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.