Home / 20,973.90-31,465.48-6,938.30

Finding the Fourth Proportional to 20,973.90, 31,465.48 and 6,938.30

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Solution

The fourth proportional to 20,973.90, 31,465.48 and 6,938.30 is: 10,408.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.90 : 31,465.48 = 6,938.30 : x
  2. Step 2: Convert to fraction form
    20,973.90/31,465.48 = 6,938.30/x
  3. Step 3: Cross multiply
    20,973.90x = 31,465.48 × 6,938.30
  4. Step 4: Simplify right side
    20,973.90x = 218,316,939.88
  5. Step 5: Solve for x
    x = 218,316,939.88/20,973.90
  6. Step 6: Final answer
    x = 10,408.98

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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.