Home / 39,109.02-53,970.69-21,203.87

Finding the Fourth Proportional to 39,109.02, 53,970.69 and 21,203.87

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Solution

The fourth proportional to 39,109.02, 53,970.69 and 21,203.87 is: 29,261.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,109.02 : 53,970.69 = 21,203.87 : x
  2. Step 2: Convert to fraction form
    39,109.02/53,970.69 = 21,203.87/x
  3. Step 3: Cross multiply
    39,109.02x = 53,970.69 × 21,203.87
  4. Step 4: Simplify right side
    39,109.02x = 1,144,387,388.55
  5. Step 5: Solve for x
    x = 1,144,387,388.55/39,109.02
  6. Step 6: Final answer
    x = 29,261.47

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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.