Home / 21,119.49-31,686.26-7,973.01

Finding the Fourth Proportional to 21,119.49, 31,686.26 and 7,973.01

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Solution

The fourth proportional to 21,119.49, 31,686.26 and 7,973.01 is: 11,962.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.49 : 31,686.26 = 7,973.01 : x
  2. Step 2: Convert to fraction form
    21,119.49/31,686.26 = 7,973.01/x
  3. Step 3: Cross multiply
    21,119.49x = 31,686.26 × 7,973.01
  4. Step 4: Simplify right side
    21,119.49x = 252,634,827.98
  5. Step 5: Solve for x
    x = 252,634,827.98/21,119.49
  6. Step 6: Final answer
    x = 11,962.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.