Home / 13,075.32-18,018.18-12,911.88

Finding the Fourth Proportional to 13,075.32, 18,018.18 and 12,911.88

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Solution

The fourth proportional to 13,075.32, 18,018.18 and 12,911.88 is: 17,792.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,075.32 : 18,018.18 = 12,911.88 : x
  2. Step 2: Convert to fraction form
    13,075.32/18,018.18 = 12,911.88/x
  3. Step 3: Cross multiply
    13,075.32x = 18,018.18 × 12,911.88
  4. Step 4: Simplify right side
    13,075.32x = 232,648,577.98
  5. Step 5: Solve for x
    x = 232,648,577.98/13,075.32
  6. Step 6: Final answer
    x = 17,792.95

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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.