Home / 21,062.00-31,577.20-12,740.31

Finding the Fourth Proportional to 21,062.00, 31,577.20 and 12,740.31

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Solution

The fourth proportional to 21,062.00, 31,577.20 and 12,740.31 is: 19,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.00 : 31,577.20 = 12,740.31 : x
  2. Step 2: Convert to fraction form
    21,062.00/31,577.20 = 12,740.31/x
  3. Step 3: Cross multiply
    21,062.00x = 31,577.20 × 12,740.31
  4. Step 4: Simplify right side
    21,062.00x = 402,303,285.08
  5. Step 5: Solve for x
    x = 402,303,285.08/21,062.00
  6. Step 6: Final answer
    x = 19,100.90

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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.