Home / 15,506.60-21,409.36-11,915.12

Finding the Fourth Proportional to 15,506.60, 21,409.36 and 11,915.12

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Solution

The fourth proportional to 15,506.60, 21,409.36 and 11,915.12 is: 16,450.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,506.60 : 21,409.36 = 11,915.12 : x
  2. Step 2: Convert to fraction form
    15,506.60/21,409.36 = 11,915.12/x
  3. Step 3: Cross multiply
    15,506.60x = 21,409.36 × 11,915.12
  4. Step 4: Simplify right side
    15,506.60x = 255,095,117.26
  5. Step 5: Solve for x
    x = 255,095,117.26/15,506.60
  6. Step 6: Final answer
    x = 16,450.75

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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.