Home / 28,308.79-39,066.10-15,562.81

Finding the Fourth Proportional to 28,308.79, 39,066.10 and 15,562.81

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Solution

The fourth proportional to 28,308.79, 39,066.10 and 15,562.81 is: 21,476.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.79 : 39,066.10 = 15,562.81 : x
  2. Step 2: Convert to fraction form
    28,308.79/39,066.10 = 15,562.81/x
  3. Step 3: Cross multiply
    28,308.79x = 39,066.10 × 15,562.81
  4. Step 4: Simplify right side
    28,308.79x = 607,978,291.74
  5. Step 5: Solve for x
    x = 607,978,291.74/28,308.79
  6. Step 6: Final answer
    x = 21,476.66

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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.