Home / 21,058.20-31,568.94-7,907.04

Finding the Fourth Proportional to 21,058.20, 31,568.94 and 7,907.04

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Solution

The fourth proportional to 21,058.20, 31,568.94 and 7,907.04 is: 11,853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.20 : 31,568.94 = 7,907.04 : x
  2. Step 2: Convert to fraction form
    21,058.20/31,568.94 = 7,907.04/x
  3. Step 3: Cross multiply
    21,058.20x = 31,568.94 × 7,907.04
  4. Step 4: Simplify right side
    21,058.20x = 249,616,871.34
  5. Step 5: Solve for x
    x = 249,616,871.34/21,058.20
  6. Step 6: Final answer
    x = 11,853.67

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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.