Home / 20,653.10-28,501.48-11,700.41

Finding the Fourth Proportional to 20,653.10, 28,501.48 and 11,700.41

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Solution

The fourth proportional to 20,653.10, 28,501.48 and 11,700.41 is: 16,146.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.10 : 28,501.48 = 11,700.41 : x
  2. Step 2: Convert to fraction form
    20,653.10/28,501.48 = 11,700.41/x
  3. Step 3: Cross multiply
    20,653.10x = 28,501.48 × 11,700.41
  4. Step 4: Simplify right side
    20,653.10x = 333,479,001.61
  5. Step 5: Solve for x
    x = 333,479,001.61/20,653.10
  6. Step 6: Final answer
    x = 16,146.68

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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.