Home / 21,636.30-29,856.76-12,075.57

Finding the Fourth Proportional to 21,636.30, 29,856.76 and 12,075.57

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Solution

The fourth proportional to 21,636.30, 29,856.76 and 12,075.57 is: 16,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.30 : 29,856.76 = 12,075.57 : x
  2. Step 2: Convert to fraction form
    21,636.30/29,856.76 = 12,075.57/x
  3. Step 3: Cross multiply
    21,636.30x = 29,856.76 × 12,075.57
  4. Step 4: Simplify right side
    21,636.30x = 360,537,395.35
  5. Step 5: Solve for x
    x = 360,537,395.35/21,636.30
  6. Step 6: Final answer
    x = 16,663.54

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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.