Home / 28,430.61-39,186.05-19,935.33

Finding the Fourth Proportional to 28,430.61, 39,186.05 and 19,935.33

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Solution

The fourth proportional to 28,430.61, 39,186.05 and 19,935.33 is: 27,476.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.61 : 39,186.05 = 19,935.33 : x
  2. Step 2: Convert to fraction form
    28,430.61/39,186.05 = 19,935.33/x
  3. Step 3: Cross multiply
    28,430.61x = 39,186.05 × 19,935.33
  4. Step 4: Simplify right side
    28,430.61x = 781,186,838.15
  5. Step 5: Solve for x
    x = 781,186,838.15/28,430.61
  6. Step 6: Final answer
    x = 27,476.96

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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.