Home / 13,288.10-18,337.95-7,320.20

Finding the Fourth Proportional to 13,288.10, 18,337.95 and 7,320.20

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Solution

The fourth proportional to 13,288.10, 18,337.95 and 7,320.20 is: 10,102.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288.10 : 18,337.95 = 7,320.20 : x
  2. Step 2: Convert to fraction form
    13,288.10/18,337.95 = 7,320.20/x
  3. Step 3: Cross multiply
    13,288.10x = 18,337.95 × 7,320.20
  4. Step 4: Simplify right side
    13,288.10x = 134,237,369.90
  5. Step 5: Solve for x
    x = 134,237,369.90/13,288.10
  6. Step 6: Final answer
    x = 10,102.08

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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.