Home / 35,130.47-48,472.80-20,783.21

Finding the Fourth Proportional to 35,130.47, 48,472.80 and 20,783.21

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Solution

The fourth proportional to 35,130.47, 48,472.80 and 20,783.21 is: 28,676.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,130.47 : 48,472.80 = 20,783.21 : x
  2. Step 2: Convert to fraction form
    35,130.47/48,472.80 = 20,783.21/x
  3. Step 3: Cross multiply
    35,130.47x = 48,472.80 × 20,783.21
  4. Step 4: Simplify right side
    35,130.47x = 1,007,420,139.32
  5. Step 5: Solve for x
    x = 1,007,420,139.32/35,130.47
  6. Step 6: Final answer
    x = 28,676.54

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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.