Home / 28,404.16-39,216-18,337.12

Finding the Fourth Proportional to 28,404.16, 39,216 and 18,337.12

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Solution

The fourth proportional to 28,404.16, 39,216 and 18,337.12 is: 25,317.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.16 : 39,216 = 18,337.12 : x
  2. Step 2: Convert to fraction form
    28,404.16/39,216 = 18,337.12/x
  3. Step 3: Cross multiply
    28,404.16x = 39,216 × 18,337.12
  4. Step 4: Simplify right side
    28,404.16x = 719,108,497.92
  5. Step 5: Solve for x
    x = 719,108,497.92/28,404.16
  6. Step 6: Final answer
    x = 25,317.01

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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.