Home / 28,437.89-42,693.73-21,868.68

Finding the Fourth Proportional to 28,437.89, 42,693.73 and 21,868.68

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Solution

The fourth proportional to 28,437.89, 42,693.73 and 21,868.68 is: 32,831.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,437.89 : 42,693.73 = 21,868.68 : x
  2. Step 2: Convert to fraction form
    28,437.89/42,693.73 = 21,868.68/x
  3. Step 3: Cross multiply
    28,437.89x = 42,693.73 × 21,868.68
  4. Step 4: Simplify right side
    28,437.89x = 933,655,747.82
  5. Step 5: Solve for x
    x = 933,655,747.82/28,437.89
  6. Step 6: Final answer
    x = 32,831.41

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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.