Home / 21,042.40-31,562.36-7,893.67

Finding the Fourth Proportional to 21,042.40, 31,562.36 and 7,893.67

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Solution

The fourth proportional to 21,042.40, 31,562.36 and 7,893.67 is: 11,840.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.40 : 31,562.36 = 7,893.67 : x
  2. Step 2: Convert to fraction form
    21,042.40/31,562.36 = 7,893.67/x
  3. Step 3: Cross multiply
    21,042.40x = 31,562.36 × 7,893.67
  4. Step 4: Simplify right side
    21,042.40x = 249,142,656.98
  5. Step 5: Solve for x
    x = 249,142,656.98/21,042.40
  6. Step 6: Final answer
    x = 11,840.03

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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.