Home / 51,021.39-70,404.69-28,357.70

Finding the Fourth Proportional to 51,021.39, 70,404.69 and 28,357.70

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Solution

The fourth proportional to 51,021.39, 70,404.69 and 28,357.70 is: 39,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,021.39 : 70,404.69 = 28,357.70 : x
  2. Step 2: Convert to fraction form
    51,021.39/70,404.69 = 28,357.70/x
  3. Step 3: Cross multiply
    51,021.39x = 70,404.69 × 28,357.70
  4. Step 4: Simplify right side
    51,021.39x = 1,996,514,831.93
  5. Step 5: Solve for x
    x = 1,996,514,831.93/51,021.39
  6. Step 6: Final answer
    x = 39,130.93

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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.