Home / 42,899.16-64,354.92-13,319.36

Finding the Fourth Proportional to 42,899.16, 64,354.92 and 13,319.36

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Solution

The fourth proportional to 42,899.16, 64,354.92 and 13,319.36 is: 19,980.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,899.16 : 64,354.92 = 13,319.36 : x
  2. Step 2: Convert to fraction form
    42,899.16/64,354.92 = 13,319.36/x
  3. Step 3: Cross multiply
    42,899.16x = 64,354.92 × 13,319.36
  4. Step 4: Simplify right side
    42,899.16x = 857,166,347.25
  5. Step 5: Solve for x
    x = 857,166,347.25/42,899.16
  6. Step 6: Final answer
    x = 19,980.96

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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.