Home / 21,312.51-31,977.98-11,440.26

Finding the Fourth Proportional to 21,312.51, 31,977.98 and 11,440.26

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Solution

The fourth proportional to 21,312.51, 31,977.98 and 11,440.26 is: 17,165.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.51 : 31,977.98 = 11,440.26 : x
  2. Step 2: Convert to fraction form
    21,312.51/31,977.98 = 11,440.26/x
  3. Step 3: Cross multiply
    21,312.51x = 31,977.98 × 11,440.26
  4. Step 4: Simplify right side
    21,312.51x = 365,836,405.47
  5. Step 5: Solve for x
    x = 365,836,405.47/21,312.51
  6. Step 6: Final answer
    x = 17,165.34

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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.