Home / 21,965.07-30,312.32-12,534.51

Finding the Fourth Proportional to 21,965.07, 30,312.32 and 12,534.51

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Solution

The fourth proportional to 21,965.07, 30,312.32 and 12,534.51 is: 17,297.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.07 : 30,312.32 = 12,534.51 : x
  2. Step 2: Convert to fraction form
    21,965.07/30,312.32 = 12,534.51/x
  3. Step 3: Cross multiply
    21,965.07x = 30,312.32 × 12,534.51
  4. Step 4: Simplify right side
    21,965.07x = 379,950,015.49
  5. Step 5: Solve for x
    x = 379,950,015.49/21,965.07
  6. Step 6: Final answer
    x = 17,297.92

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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.