Home / 28,041.60-38,669.76-21,751.68

Finding the Fourth Proportional to 28,041.60, 38,669.76 and 21,751.68

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Solution

The fourth proportional to 28,041.60, 38,669.76 and 21,751.68 is: 29,995.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041.60 : 38,669.76 = 21,751.68 : x
  2. Step 2: Convert to fraction form
    28,041.60/38,669.76 = 21,751.68/x
  3. Step 3: Cross multiply
    28,041.60x = 38,669.76 × 21,751.68
  4. Step 4: Simplify right side
    28,041.60x = 841,132,245.20
  5. Step 5: Solve for x
    x = 841,132,245.20/28,041.60
  6. Step 6: Final answer
    x = 29,995.87

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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.