Home / 28,429.80-42,434.13-26,678.76

Finding the Fourth Proportional to 28,429.80, 42,434.13 and 26,678.76

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Solution

The fourth proportional to 28,429.80, 42,434.13 and 26,678.76 is: 39,820.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,429.80 : 42,434.13 = 26,678.76 : x
  2. Step 2: Convert to fraction form
    28,429.80/42,434.13 = 26,678.76/x
  3. Step 3: Cross multiply
    28,429.80x = 42,434.13 × 26,678.76
  4. Step 4: Simplify right side
    28,429.80x = 1,132,089,970.08
  5. Step 5: Solve for x
    x = 1,132,089,970.08/28,429.80
  6. Step 6: Final answer
    x = 39,820.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.