Home / 35,420.37-48,878.22-20,312.31

Finding the Fourth Proportional to 35,420.37, 48,878.22 and 20,312.31

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Solution

The fourth proportional to 35,420.37, 48,878.22 and 20,312.31 is: 28,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,420.37 : 48,878.22 = 20,312.31 : x
  2. Step 2: Convert to fraction form
    35,420.37/48,878.22 = 20,312.31/x
  3. Step 3: Cross multiply
    35,420.37x = 48,878.22 × 20,312.31
  4. Step 4: Simplify right side
    35,420.37x = 992,829,312.50
  5. Step 5: Solve for x
    x = 992,829,312.50/35,420.37
  6. Step 6: Final answer
    x = 28,029.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.