Home / 22,690.64-31,315.14-12,618.92

Finding the Fourth Proportional to 22,690.64, 31,315.14 and 12,618.92

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Solution

The fourth proportional to 22,690.64, 31,315.14 and 12,618.92 is: 17,415.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,690.64 : 31,315.14 = 12,618.92 : x
  2. Step 2: Convert to fraction form
    22,690.64/31,315.14 = 12,618.92/x
  3. Step 3: Cross multiply
    22,690.64x = 31,315.14 × 12,618.92
  4. Step 4: Simplify right side
    22,690.64x = 395,163,246.45
  5. Step 5: Solve for x
    x = 395,163,246.45/22,690.64
  6. Step 6: Final answer
    x = 17,415.25

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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.