Home / 21,191.58-31,810.37-15,941.57

Finding the Fourth Proportional to 21,191.58, 31,810.37 and 15,941.57

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Solution

The fourth proportional to 21,191.58, 31,810.37 and 15,941.57 is: 23,929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.58 : 31,810.37 = 15,941.57 : x
  2. Step 2: Convert to fraction form
    21,191.58/31,810.37 = 15,941.57/x
  3. Step 3: Cross multiply
    21,191.58x = 31,810.37 × 15,941.57
  4. Step 4: Simplify right side
    21,191.58x = 507,107,001.32
  5. Step 5: Solve for x
    x = 507,107,001.32/21,191.58
  6. Step 6: Final answer
    x = 23,929.65

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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.