Home / 19,374.40-26,729.78-12,663.89

Finding the Fourth Proportional to 19,374.40, 26,729.78 and 12,663.89

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Solution

The fourth proportional to 19,374.40, 26,729.78 and 12,663.89 is: 17,471.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,374.40 : 26,729.78 = 12,663.89 : x
  2. Step 2: Convert to fraction form
    19,374.40/26,729.78 = 12,663.89/x
  3. Step 3: Cross multiply
    19,374.40x = 26,729.78 × 12,663.89
  4. Step 4: Simplify right side
    19,374.40x = 338,502,993.64
  5. Step 5: Solve for x
    x = 338,502,993.64/19,374.40
  6. Step 6: Final answer
    x = 17,471.67

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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.