Home / 20,907.08-31,344.18-14,313.28

Finding the Fourth Proportional to 20,907.08, 31,344.18 and 14,313.28

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Solution

The fourth proportional to 20,907.08, 31,344.18 and 14,313.28 is: 21,458.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.08 : 31,344.18 = 14,313.28 : x
  2. Step 2: Convert to fraction form
    20,907.08/31,344.18 = 14,313.28/x
  3. Step 3: Cross multiply
    20,907.08x = 31,344.18 × 14,313.28
  4. Step 4: Simplify right side
    20,907.08x = 448,638,024.71
  5. Step 5: Solve for x
    x = 448,638,024.71/20,907.08
  6. Step 6: Final answer
    x = 21,458.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.