Home / 11,607.03-16,017.95-7,128.20

Finding the Fourth Proportional to 11,607.03, 16,017.95 and 7,128.20

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Solution

The fourth proportional to 11,607.03, 16,017.95 and 7,128.20 is: 9,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,607.03 : 16,017.95 = 7,128.20 : x
  2. Step 2: Convert to fraction form
    11,607.03/16,017.95 = 7,128.20/x
  3. Step 3: Cross multiply
    11,607.03x = 16,017.95 × 7,128.20
  4. Step 4: Simplify right side
    11,607.03x = 114,179,209.06
  5. Step 5: Solve for x
    x = 114,179,209.06/11,607.03
  6. Step 6: Final answer
    x = 9,837.07

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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.