Home / 20,967.24-28,947.72-14,430

Finding the Fourth Proportional to 20,967.24, 28,947.72 and 14,430

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Solution

The fourth proportional to 20,967.24, 28,947.72 and 14,430 is: 19,922.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.24 : 28,947.72 = 14,430 : x
  2. Step 2: Convert to fraction form
    20,967.24/28,947.72 = 14,430/x
  3. Step 3: Cross multiply
    20,967.24x = 28,947.72 × 14,430
  4. Step 4: Simplify right side
    20,967.24x = 417,715,599.60
  5. Step 5: Solve for x
    x = 417,715,599.60/20,967.24
  6. Step 6: Final answer
    x = 19,922.30

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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.