Home / 42,938.47-64,399.50-13,356.66

Finding the Fourth Proportional to 42,938.47, 64,399.50 and 13,356.66

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Solution

The fourth proportional to 42,938.47, 64,399.50 and 13,356.66 is: 20,032.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,938.47 : 64,399.50 = 13,356.66 : x
  2. Step 2: Convert to fraction form
    42,938.47/64,399.50 = 13,356.66/x
  3. Step 3: Cross multiply
    42,938.47x = 64,399.50 × 13,356.66
  4. Step 4: Simplify right side
    42,938.47x = 860,162,225.67
  5. Step 5: Solve for x
    x = 860,162,225.67/42,938.47
  6. Step 6: Final answer
    x = 20,032.44

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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.