Home / 15,287.09-21,094.04-8,915.63

Finding the Fourth Proportional to 15,287.09, 21,094.04 and 8,915.63

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Solution

The fourth proportional to 15,287.09, 21,094.04 and 8,915.63 is: 12,302.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.09 : 21,094.04 = 8,915.63 : x
  2. Step 2: Convert to fraction form
    15,287.09/21,094.04 = 8,915.63/x
  3. Step 3: Cross multiply
    15,287.09x = 21,094.04 × 8,915.63
  4. Step 4: Simplify right side
    15,287.09x = 188,066,572.66
  5. Step 5: Solve for x
    x = 188,066,572.66/15,287.09
  6. Step 6: Final answer
    x = 12,302.32

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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.