Home / 28,421.57-42,669.29-21,852.38

Finding the Fourth Proportional to 28,421.57, 42,669.29 and 21,852.38

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Solution

The fourth proportional to 28,421.57, 42,669.29 and 21,852.38 is: 32,806.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.57 : 42,669.29 = 21,852.38 : x
  2. Step 2: Convert to fraction form
    28,421.57/42,669.29 = 21,852.38/x
  3. Step 3: Cross multiply
    28,421.57x = 42,669.29 × 21,852.38
  4. Step 4: Simplify right side
    28,421.57x = 932,425,700.71
  5. Step 5: Solve for x
    x = 932,425,700.71/28,421.57
  6. Step 6: Final answer
    x = 32,806.97

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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.