Home / 42,895.16-64,348.92-13,315.36

Finding the Fourth Proportional to 42,895.16, 64,348.92 and 13,315.36

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Solution

The fourth proportional to 42,895.16, 64,348.92 and 13,315.36 is: 19,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,895.16 : 64,348.92 = 13,315.36 : x
  2. Step 2: Convert to fraction form
    42,895.16/64,348.92 = 13,315.36/x
  3. Step 3: Cross multiply
    42,895.16x = 64,348.92 × 13,315.36
  4. Step 4: Simplify right side
    42,895.16x = 856,829,035.41
  5. Step 5: Solve for x
    x = 856,829,035.41/42,895.16
  6. Step 6: Final answer
    x = 19,974.96

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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.