Home / 28,403.94-39,197.71-15,657.62

Finding the Fourth Proportional to 28,403.94, 39,197.71 and 15,657.62

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Solution

The fourth proportional to 28,403.94, 39,197.71 and 15,657.62 is: 21,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.94 : 39,197.71 = 15,657.62 : x
  2. Step 2: Convert to fraction form
    28,403.94/39,197.71 = 15,657.62/x
  3. Step 3: Cross multiply
    28,403.94x = 39,197.71 × 15,657.62
  4. Step 4: Simplify right side
    28,403.94x = 613,742,573.77
  5. Step 5: Solve for x
    x = 613,742,573.77/28,403.94
  6. Step 6: Final answer
    x = 21,607.66

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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.