Home / 21,802.40-30,087.38-12,370.94

Finding the Fourth Proportional to 21,802.40, 30,087.38 and 12,370.94

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Solution

The fourth proportional to 21,802.40, 30,087.38 and 12,370.94 is: 17,071.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,802.40 : 30,087.38 = 12,370.94 : x
  2. Step 2: Convert to fraction form
    21,802.40/30,087.38 = 12,370.94/x
  3. Step 3: Cross multiply
    21,802.40x = 30,087.38 × 12,370.94
  4. Step 4: Simplify right side
    21,802.40x = 372,209,110.88
  5. Step 5: Solve for x
    x = 372,209,110.88/21,802.40
  6. Step 6: Final answer
    x = 17,071.93

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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.