Home / 21,140.48-31,686.76-16,425.48

Finding the Fourth Proportional to 21,140.48, 31,686.76 and 16,425.48

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Solution

The fourth proportional to 21,140.48, 31,686.76 and 16,425.48 is: 24,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.48 : 31,686.76 = 16,425.48 : x
  2. Step 2: Convert to fraction form
    21,140.48/31,686.76 = 16,425.48/x
  3. Step 3: Cross multiply
    21,140.48x = 31,686.76 × 16,425.48
  4. Step 4: Simplify right side
    21,140.48x = 520,470,242.64
  5. Step 5: Solve for x
    x = 520,470,242.64/21,140.48
  6. Step 6: Final answer
    x = 24,619.60

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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.