Home / 40,119.40-55,362.63-21,966.64

Finding the Fourth Proportional to 40,119.40, 55,362.63 and 21,966.64

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Solution

The fourth proportional to 40,119.40, 55,362.63 and 21,966.64 is: 30,312.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,119.40 : 55,362.63 = 21,966.64 : x
  2. Step 2: Convert to fraction form
    40,119.40/55,362.63 = 21,966.64/x
  3. Step 3: Cross multiply
    40,119.40x = 55,362.63 × 21,966.64
  4. Step 4: Simplify right side
    40,119.40x = 1,216,130,962.66
  5. Step 5: Solve for x
    x = 1,216,130,962.66/40,119.40
  6. Step 6: Final answer
    x = 30,312.79

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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.