Home / 20,088.35-27,709.06-12,915.83

Finding the Fourth Proportional to 20,088.35, 27,709.06 and 12,915.83

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Solution

The fourth proportional to 20,088.35, 27,709.06 and 12,915.83 is: 17,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088.35 : 27,709.06 = 12,915.83 : x
  2. Step 2: Convert to fraction form
    20,088.35/27,709.06 = 12,915.83/x
  3. Step 3: Cross multiply
    20,088.35x = 27,709.06 × 12,915.83
  4. Step 4: Simplify right side
    20,088.35x = 357,885,528.01
  5. Step 5: Solve for x
    x = 357,885,528.01/20,088.35
  6. Step 6: Final answer
    x = 17,815.57

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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.