Home / 20,307.43-28,024.34-11,355.31

Finding the Fourth Proportional to 20,307.43, 28,024.34 and 11,355.31

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Solution

The fourth proportional to 20,307.43, 28,024.34 and 11,355.31 is: 15,670.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.43 : 28,024.34 = 11,355.31 : x
  2. Step 2: Convert to fraction form
    20,307.43/28,024.34 = 11,355.31/x
  3. Step 3: Cross multiply
    20,307.43x = 28,024.34 × 11,355.31
  4. Step 4: Simplify right side
    20,307.43x = 318,225,068.25
  5. Step 5: Solve for x
    x = 318,225,068.25/20,307.43
  6. Step 6: Final answer
    x = 15,670.38

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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.