Home / 39,113.10-53,976.15-21,208.05

Finding the Fourth Proportional to 39,113.10, 53,976.15 and 21,208.05

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Solution

The fourth proportional to 39,113.10, 53,976.15 and 21,208.05 is: 29,267.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,113.10 : 53,976.15 = 21,208.05 : x
  2. Step 2: Convert to fraction form
    39,113.10/53,976.15 = 21,208.05/x
  3. Step 3: Cross multiply
    39,113.10x = 53,976.15 × 21,208.05
  4. Step 4: Simplify right side
    39,113.10x = 1,144,728,888.01
  5. Step 5: Solve for x
    x = 1,144,728,888.01/39,113.10
  6. Step 6: Final answer
    x = 29,267.15

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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.