Home / 35,772.15-53,640.95-20,985.87

Finding the Fourth Proportional to 35,772.15, 53,640.95 and 20,985.87

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Solution

The fourth proportional to 35,772.15, 53,640.95 and 20,985.87 is: 31,468.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,772.15 : 53,640.95 = 20,985.87 : x
  2. Step 2: Convert to fraction form
    35,772.15/53,640.95 = 20,985.87/x
  3. Step 3: Cross multiply
    35,772.15x = 53,640.95 × 20,985.87
  4. Step 4: Simplify right side
    35,772.15x = 1,125,701,898.45
  5. Step 5: Solve for x
    x = 1,125,701,898.45/35,772.15
  6. Step 6: Final answer
    x = 31,468.67

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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.