Home / 21,075.69-31,520.54-18,752.01

Finding the Fourth Proportional to 21,075.69, 31,520.54 and 18,752.01

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Solution

The fourth proportional to 21,075.69, 31,520.54 and 18,752.01 is: 28,045.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.69 : 31,520.54 = 18,752.01 : x
  2. Step 2: Convert to fraction form
    21,075.69/31,520.54 = 18,752.01/x
  3. Step 3: Cross multiply
    21,075.69x = 31,520.54 × 18,752.01
  4. Step 4: Simplify right side
    21,075.69x = 591,073,409.96
  5. Step 5: Solve for x
    x = 591,073,409.96/21,075.69
  6. Step 6: Final answer
    x = 28,045.26

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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.