Home / 22,518.78-31,075.04-12,961.74

Finding the Fourth Proportional to 22,518.78, 31,075.04 and 12,961.74

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Solution

The fourth proportional to 22,518.78, 31,075.04 and 12,961.74 is: 17,886.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,518.78 : 31,075.04 = 12,961.74 : x
  2. Step 2: Convert to fraction form
    22,518.78/31,075.04 = 12,961.74/x
  3. Step 3: Cross multiply
    22,518.78x = 31,075.04 × 12,961.74
  4. Step 4: Simplify right side
    22,518.78x = 402,786,588.97
  5. Step 5: Solve for x
    x = 402,786,588.97/22,518.78
  6. Step 6: Final answer
    x = 17,886.70

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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.