Home / 28,289.57-39,039.45-15,368.74

Finding the Fourth Proportional to 28,289.57, 39,039.45 and 15,368.74

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Solution

The fourth proportional to 28,289.57, 39,039.45 and 15,368.74 is: 21,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.57 : 39,039.45 = 15,368.74 : x
  2. Step 2: Convert to fraction form
    28,289.57/39,039.45 = 15,368.74/x
  3. Step 3: Cross multiply
    28,289.57x = 39,039.45 × 15,368.74
  4. Step 4: Simplify right side
    28,289.57x = 599,987,088.01
  5. Step 5: Solve for x
    x = 599,987,088.01/28,289.57
  6. Step 6: Final answer
    x = 21,208.77

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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.