Home / 42,386.59-63,597.76-21,315.56

Finding the Fourth Proportional to 42,386.59, 63,597.76 and 21,315.56

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Solution

The fourth proportional to 42,386.59, 63,597.76 and 21,315.56 is: 31,982.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,386.59 : 63,597.76 = 21,315.56 : x
  2. Step 2: Convert to fraction form
    42,386.59/63,597.76 = 21,315.56/x
  3. Step 3: Cross multiply
    42,386.59x = 63,597.76 × 21,315.56
  4. Step 4: Simplify right side
    42,386.59x = 1,355,621,497.87
  5. Step 5: Solve for x
    x = 1,355,621,497.87/42,386.59
  6. Step 6: Final answer
    x = 31,982.32

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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.