Home / 20,386.70-30,587.83-7,915.48

Finding the Fourth Proportional to 20,386.70, 30,587.83 and 7,915.48

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Solution

The fourth proportional to 20,386.70, 30,587.83 and 7,915.48 is: 11,876.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.70 : 30,587.83 = 7,915.48 : x
  2. Step 2: Convert to fraction form
    20,386.70/30,587.83 = 7,915.48/x
  3. Step 3: Cross multiply
    20,386.70x = 30,587.83 × 7,915.48
  4. Step 4: Simplify right side
    20,386.70x = 242,117,275.19
  5. Step 5: Solve for x
    x = 242,117,275.19/20,386.70
  6. Step 6: Final answer
    x = 11,876.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.