Home / 21,915.93-30,246.63-12,357.66

Finding the Fourth Proportional to 21,915.93, 30,246.63 and 12,357.66

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Solution

The fourth proportional to 21,915.93, 30,246.63 and 12,357.66 is: 17,055.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.93 : 30,246.63 = 12,357.66 : x
  2. Step 2: Convert to fraction form
    21,915.93/30,246.63 = 12,357.66/x
  3. Step 3: Cross multiply
    21,915.93x = 30,246.63 × 12,357.66
  4. Step 4: Simplify right side
    21,915.93x = 373,777,569.69
  5. Step 5: Solve for x
    x = 373,777,569.69/21,915.93
  6. Step 6: Final answer
    x = 17,055.06

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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.