Home / 13,572.02-18,729.12-7,603.58

Finding the Fourth Proportional to 13,572.02, 18,729.12 and 7,603.58

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Solution

The fourth proportional to 13,572.02, 18,729.12 and 7,603.58 is: 10,492.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.02 : 18,729.12 = 7,603.58 : x
  2. Step 2: Convert to fraction form
    13,572.02/18,729.12 = 7,603.58/x
  3. Step 3: Cross multiply
    13,572.02x = 18,729.12 × 7,603.58
  4. Step 4: Simplify right side
    13,572.02x = 142,408,362.25
  5. Step 5: Solve for x
    x = 142,408,362.25/13,572.02
  6. Step 6: Final answer
    x = 10,492.79

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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.