Home / 39,698.10-54,783.18-21,548.84

Finding the Fourth Proportional to 39,698.10, 54,783.18 and 21,548.84

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Solution

The fourth proportional to 39,698.10, 54,783.18 and 21,548.84 is: 29,737.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698.10 : 54,783.18 = 21,548.84 : x
  2. Step 2: Convert to fraction form
    39,698.10/54,783.18 = 21,548.84/x
  3. Step 3: Cross multiply
    39,698.10x = 54,783.18 × 21,548.84
  4. Step 4: Simplify right side
    39,698.10x = 1,180,513,980.51
  5. Step 5: Solve for x
    x = 1,180,513,980.51/39,698.10
  6. Step 6: Final answer
    x = 29,737.29

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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.