Home / 30,725.40-46,088.13-8,538.78

Finding the Fourth Proportional to 30,725.40, 46,088.13 and 8,538.78

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Solution

The fourth proportional to 30,725.40, 46,088.13 and 8,538.78 is: 12,808.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,725.40 : 46,088.13 = 8,538.78 : x
  2. Step 2: Convert to fraction form
    30,725.40/46,088.13 = 8,538.78/x
  3. Step 3: Cross multiply
    30,725.40x = 46,088.13 × 8,538.78
  4. Step 4: Simplify right side
    30,725.40x = 393,536,402.68
  5. Step 5: Solve for x
    x = 393,536,402.68/30,725.40
  6. Step 6: Final answer
    x = 12,808.18

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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.