Home / 38,984.67-53,798.76-21,988.86

Finding the Fourth Proportional to 38,984.67, 53,798.76 and 21,988.86

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Solution

The fourth proportional to 38,984.67, 53,798.76 and 21,988.86 is: 30,344.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,984.67 : 53,798.76 = 21,988.86 : x
  2. Step 2: Convert to fraction form
    38,984.67/53,798.76 = 21,988.86/x
  3. Step 3: Cross multiply
    38,984.67x = 53,798.76 × 21,988.86
  4. Step 4: Simplify right side
    38,984.67x = 1,182,973,022.88
  5. Step 5: Solve for x
    x = 1,182,973,022.88/38,984.67
  6. Step 6: Final answer
    x = 30,344.57

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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.