Home / 28,368.81-39,148.07-15,792.93

Finding the Fourth Proportional to 28,368.81, 39,148.07 and 15,792.93

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Solution

The fourth proportional to 28,368.81, 39,148.07 and 15,792.93 is: 21,793.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.81 : 39,148.07 = 15,792.93 : x
  2. Step 2: Convert to fraction form
    28,368.81/39,148.07 = 15,792.93/x
  3. Step 3: Cross multiply
    28,368.81x = 39,148.07 × 15,792.93
  4. Step 4: Simplify right side
    28,368.81x = 618,262,650.18
  5. Step 5: Solve for x
    x = 618,262,650.18/28,368.81
  6. Step 6: Final answer
    x = 21,793.75

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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.