Home / 21,041.90-31,561.61-7,893.17

Finding the Fourth Proportional to 21,041.90, 31,561.61 and 7,893.17

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Solution

The fourth proportional to 21,041.90, 31,561.61 and 7,893.17 is: 11,839.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.90 : 31,561.61 = 7,893.17 : x
  2. Step 2: Convert to fraction form
    21,041.90/31,561.61 = 7,893.17/x
  3. Step 3: Cross multiply
    21,041.90x = 31,561.61 × 7,893.17
  4. Step 4: Simplify right side
    21,041.90x = 249,120,955.93
  5. Step 5: Solve for x
    x = 249,120,955.93/21,041.90
  6. Step 6: Final answer
    x = 11,839.28

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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.