Home / 56,438.31-84,636-18,478.74

Finding the Fourth Proportional to 56,438.31, 84,636 and 18,478.74

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Solution

The fourth proportional to 56,438.31, 84,636 and 18,478.74 is: 27,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,438.31 : 84,636 = 18,478.74 : x
  2. Step 2: Convert to fraction form
    56,438.31/84,636 = 18,478.74/x
  3. Step 3: Cross multiply
    56,438.31x = 84,636 × 18,478.74
  4. Step 4: Simplify right side
    56,438.31x = 1,563,966,638.64
  5. Step 5: Solve for x
    x = 1,563,966,638.64/56,438.31
  6. Step 6: Final answer
    x = 27,711.08

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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.