Home / 35,865.15-53,730.18-21,030

Finding the Fourth Proportional to 35,865.15, 53,730.18 and 21,030

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Solution

The fourth proportional to 35,865.15, 53,730.18 and 21,030 is: 31,505.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,865.15 : 53,730.18 = 21,030 : x
  2. Step 2: Convert to fraction form
    35,865.15/53,730.18 = 21,030/x
  3. Step 3: Cross multiply
    35,865.15x = 53,730.18 × 21,030
  4. Step 4: Simplify right side
    35,865.15x = 1,129,945,685.40
  5. Step 5: Solve for x
    x = 1,129,945,685.40/35,865.15
  6. Step 6: Final answer
    x = 31,505.39

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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.