Home / 22,147.12-30,563.40-12,715.60

Finding the Fourth Proportional to 22,147.12, 30,563.40 and 12,715.60

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Solution

The fourth proportional to 22,147.12, 30,563.40 and 12,715.60 is: 17,547.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,147.12 : 30,563.40 = 12,715.60 : x
  2. Step 2: Convert to fraction form
    22,147.12/30,563.40 = 12,715.60/x
  3. Step 3: Cross multiply
    22,147.12x = 30,563.40 × 12,715.60
  4. Step 4: Simplify right side
    22,147.12x = 388,631,969.04
  5. Step 5: Solve for x
    x = 388,631,969.04/22,147.12
  6. Step 6: Final answer
    x = 17,547.74

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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.