Home / 42,938.88-64,398.60-19,572

Finding the Fourth Proportional to 42,938.88, 64,398.60 and 19,572

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Solution

The fourth proportional to 42,938.88, 64,398.60 and 19,572 is: 29,353.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,938.88 : 64,398.60 = 19,572 : x
  2. Step 2: Convert to fraction form
    42,938.88/64,398.60 = 19,572/x
  3. Step 3: Cross multiply
    42,938.88x = 64,398.60 × 19,572
  4. Step 4: Simplify right side
    42,938.88x = 1,260,409,399.20
  5. Step 5: Solve for x
    x = 1,260,409,399.20/42,938.88
  6. Step 6: Final answer
    x = 29,353.57

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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.