Home / 21,023.76-29,002.68-13,075.32

Finding the Fourth Proportional to 21,023.76, 29,002.68 and 13,075.32

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Solution

The fourth proportional to 21,023.76, 29,002.68 and 13,075.32 is: 18,037.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,023.76 : 29,002.68 = 13,075.32 : x
  2. Step 2: Convert to fraction form
    21,023.76/29,002.68 = 13,075.32/x
  3. Step 3: Cross multiply
    21,023.76x = 29,002.68 × 13,075.32
  4. Step 4: Simplify right side
    21,023.76x = 379,219,321.86
  5. Step 5: Solve for x
    x = 379,219,321.86/21,023.76
  6. Step 6: Final answer
    x = 18,037.65

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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.