Home / 65,455.92-98,187.12-18,715.68

Finding the Fourth Proportional to 65,455.92, 98,187.12 and 18,715.68

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Solution

The fourth proportional to 65,455.92, 98,187.12 and 18,715.68 is: 28,074.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,455.92 : 98,187.12 = 18,715.68 : x
  2. Step 2: Convert to fraction form
    65,455.92/98,187.12 = 18,715.68/x
  3. Step 3: Cross multiply
    65,455.92x = 98,187.12 × 18,715.68
  4. Step 4: Simplify right side
    65,455.92x = 1,837,638,718.04
  5. Step 5: Solve for x
    x = 1,837,638,718.04/65,455.92
  6. Step 6: Final answer
    x = 28,074.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.