Home / 21,046.80-31,521.60-14,437.20

Finding the Fourth Proportional to 21,046.80, 31,521.60 and 14,437.20

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Solution

The fourth proportional to 21,046.80, 31,521.60 and 14,437.20 is: 21,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.80 : 31,521.60 = 14,437.20 : x
  2. Step 2: Convert to fraction form
    21,046.80/31,521.60 = 14,437.20/x
  3. Step 3: Cross multiply
    21,046.80x = 31,521.60 × 14,437.20
  4. Step 4: Simplify right side
    21,046.80x = 455,083,643.52
  5. Step 5: Solve for x
    x = 455,083,643.52/21,046.80
  6. Step 6: Final answer
    x = 21,622.46

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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.