Home / 20,317.52-28,038.47-11,365.94

Finding the Fourth Proportional to 20,317.52, 28,038.47 and 11,365.94

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Solution

The fourth proportional to 20,317.52, 28,038.47 and 11,365.94 is: 15,685.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.52 : 28,038.47 = 11,365.94 : x
  2. Step 2: Convert to fraction form
    20,317.52/28,038.47 = 11,365.94/x
  3. Step 3: Cross multiply
    20,317.52x = 28,038.47 × 11,365.94
  4. Step 4: Simplify right side
    20,317.52x = 318,683,370.69
  5. Step 5: Solve for x
    x = 318,683,370.69/20,317.52
  6. Step 6: Final answer
    x = 15,685.15

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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.