Home / 21,060.77-31,580.55-7,015.82

Finding the Fourth Proportional to 21,060.77, 31,580.55 and 7,015.82

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Solution

The fourth proportional to 21,060.77, 31,580.55 and 7,015.82 is: 10,520.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.77 : 31,580.55 = 7,015.82 : x
  2. Step 2: Convert to fraction form
    21,060.77/31,580.55 = 7,015.82/x
  3. Step 3: Cross multiply
    21,060.77x = 31,580.55 × 7,015.82
  4. Step 4: Simplify right side
    21,060.77x = 221,563,296.40
  5. Step 5: Solve for x
    x = 221,563,296.40/21,060.77
  6. Step 6: Final answer
    x = 10,520.19

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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.