Home / 15,438.78-23,155.71-4,907.40

Finding the Fourth Proportional to 15,438.78, 23,155.71 and 4,907.40

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Solution

The fourth proportional to 15,438.78, 23,155.71 and 4,907.40 is: 7,360.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.78 : 23,155.71 = 4,907.40 : x
  2. Step 2: Convert to fraction form
    15,438.78/23,155.71 = 4,907.40/x
  3. Step 3: Cross multiply
    15,438.78x = 23,155.71 × 4,907.40
  4. Step 4: Simplify right side
    15,438.78x = 113,634,331.25
  5. Step 5: Solve for x
    x = 113,634,331.25/15,438.78
  6. Step 6: Final answer
    x = 7,360.32

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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.