Home / 21,646.48-29,870.74-12,087.26

Finding the Fourth Proportional to 21,646.48, 29,870.74 and 12,087.26

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Solution

The fourth proportional to 21,646.48, 29,870.74 and 12,087.26 is: 16,679.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646.48 : 29,870.74 = 12,087.26 : x
  2. Step 2: Convert to fraction form
    21,646.48/29,870.74 = 12,087.26/x
  3. Step 3: Cross multiply
    21,646.48x = 29,870.74 × 12,087.26
  4. Step 4: Simplify right side
    21,646.48x = 361,055,400.77
  5. Step 5: Solve for x
    x = 361,055,400.77/21,646.48
  6. Step 6: Final answer
    x = 16,679.64

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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.