Home / 20,347.94-30,386.14-15,915.62

Finding the Fourth Proportional to 20,347.94, 30,386.14 and 15,915.62

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Solution

The fourth proportional to 20,347.94, 30,386.14 and 15,915.62 is: 23,767.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.94 : 30,386.14 = 15,915.62 : x
  2. Step 2: Convert to fraction form
    20,347.94/30,386.14 = 15,915.62/x
  3. Step 3: Cross multiply
    20,347.94x = 30,386.14 × 15,915.62
  4. Step 4: Simplify right side
    20,347.94x = 483,614,257.51
  5. Step 5: Solve for x
    x = 483,614,257.51/20,347.94
  6. Step 6: Final answer
    x = 23,767.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.