Home / 39,875.58-55,028.41-21,970.53

Finding the Fourth Proportional to 39,875.58, 55,028.41 and 21,970.53

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Solution

The fourth proportional to 39,875.58, 55,028.41 and 21,970.53 is: 30,319.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,875.58 : 55,028.41 = 21,970.53 : x
  2. Step 2: Convert to fraction form
    39,875.58/55,028.41 = 21,970.53/x
  3. Step 3: Cross multiply
    39,875.58x = 55,028.41 × 21,970.53
  4. Step 4: Simplify right side
    39,875.58x = 1,209,003,277.83
  5. Step 5: Solve for x
    x = 1,209,003,277.83/39,875.58
  6. Step 6: Final answer
    x = 30,319.39

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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.