Home / 12,886.93-19,330.40-7,047.64

Finding the Fourth Proportional to 12,886.93, 19,330.40 and 7,047.64

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Solution

The fourth proportional to 12,886.93, 19,330.40 and 7,047.64 is: 10,571.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.93 : 19,330.40 = 7,047.64 : x
  2. Step 2: Convert to fraction form
    12,886.93/19,330.40 = 7,047.64/x
  3. Step 3: Cross multiply
    12,886.93x = 19,330.40 × 7,047.64
  4. Step 4: Simplify right side
    12,886.93x = 136,233,700.26
  5. Step 5: Solve for x
    x = 136,233,700.26/12,886.93
  6. Step 6: Final answer
    x = 10,571.46

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Similar ratio
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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.