Home / 28,454.81-39,269.81-15,710.45

Finding the Fourth Proportional to 28,454.81, 39,269.81 and 15,710.45

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Solution

The fourth proportional to 28,454.81, 39,269.81 and 15,710.45 is: 21,681.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,454.81 : 39,269.81 = 15,710.45 : x
  2. Step 2: Convert to fraction form
    28,454.81/39,269.81 = 15,710.45/x
  3. Step 3: Cross multiply
    28,454.81x = 39,269.81 × 15,710.45
  4. Step 4: Simplify right side
    28,454.81x = 616,946,111.61
  5. Step 5: Solve for x
    x = 616,946,111.61/28,454.81
  6. Step 6: Final answer
    x = 21,681.61

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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.