Home / 12,210.36-16,851.55-7,430.64

Finding the Fourth Proportional to 12,210.36, 16,851.55 and 7,430.64

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Solution

The fourth proportional to 12,210.36, 16,851.55 and 7,430.64 is: 10,255.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.36 : 16,851.55 = 7,430.64 : x
  2. Step 2: Convert to fraction form
    12,210.36/16,851.55 = 7,430.64/x
  3. Step 3: Cross multiply
    12,210.36x = 16,851.55 × 7,430.64
  4. Step 4: Simplify right side
    12,210.36x = 125,217,801.49
  5. Step 5: Solve for x
    x = 125,217,801.49/12,210.36
  6. Step 6: Final answer
    x = 10,255.05

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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.