Home / 31,725.75-47,590.86-12,750.40

Finding the Fourth Proportional to 31,725.75, 47,590.86 and 12,750.40

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Solution

The fourth proportional to 31,725.75, 47,590.86 and 12,750.40 is: 19,126.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,725.75 : 47,590.86 = 12,750.40 : x
  2. Step 2: Convert to fraction form
    31,725.75/47,590.86 = 12,750.40/x
  3. Step 3: Cross multiply
    31,725.75x = 47,590.86 × 12,750.40
  4. Step 4: Simplify right side
    31,725.75x = 606,802,501.34
  5. Step 5: Solve for x
    x = 606,802,501.34/31,725.75
  6. Step 6: Final answer
    x = 19,126.50

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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.