Home / 28,307.56-39,068.12-18,265.21

Finding the Fourth Proportional to 28,307.56, 39,068.12 and 18,265.21

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Solution

The fourth proportional to 28,307.56, 39,068.12 and 18,265.21 is: 25,208.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.56 : 39,068.12 = 18,265.21 : x
  2. Step 2: Convert to fraction form
    28,307.56/39,068.12 = 18,265.21/x
  3. Step 3: Cross multiply
    28,307.56x = 39,068.12 × 18,265.21
  4. Step 4: Simplify right side
    28,307.56x = 713,587,416.11
  5. Step 5: Solve for x
    x = 713,587,416.11/28,307.56
  6. Step 6: Final answer
    x = 25,208.37

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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.