Home / 21,075.37-29,088.09-13,531.23

Finding the Fourth Proportional to 21,075.37, 29,088.09 and 13,531.23

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Solution

The fourth proportional to 21,075.37, 29,088.09 and 13,531.23 is: 18,675.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.37 : 29,088.09 = 13,531.23 : x
  2. Step 2: Convert to fraction form
    21,075.37/29,088.09 = 13,531.23/x
  3. Step 3: Cross multiply
    21,075.37x = 29,088.09 × 13,531.23
  4. Step 4: Simplify right side
    21,075.37x = 393,597,636.05
  5. Step 5: Solve for x
    x = 393,597,636.05/21,075.37
  6. Step 6: Final answer
    x = 18,675.72

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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.