Home / 13,858.10-20,783.10-4,972.40

Finding the Fourth Proportional to 13,858.10, 20,783.10 and 4,972.40

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Solution

The fourth proportional to 13,858.10, 20,783.10 and 4,972.40 is: 7,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.10 : 20,783.10 = 4,972.40 : x
  2. Step 2: Convert to fraction form
    13,858.10/20,783.10 = 4,972.40/x
  3. Step 3: Cross multiply
    13,858.10x = 20,783.10 × 4,972.40
  4. Step 4: Simplify right side
    13,858.10x = 103,341,886.44
  5. Step 5: Solve for x
    x = 103,341,886.44/13,858.10
  6. Step 6: Final answer
    x = 7,457.15

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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.