Home / 21,358.16-29,488.11-19,116.15

Finding the Fourth Proportional to 21,358.16, 29,488.11 and 19,116.15

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Solution

The fourth proportional to 21,358.16, 29,488.11 and 19,116.15 is: 26,392.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.16 : 29,488.11 = 19,116.15 : x
  2. Step 2: Convert to fraction form
    21,358.16/29,488.11 = 19,116.15/x
  3. Step 3: Cross multiply
    21,358.16x = 29,488.11 × 19,116.15
  4. Step 4: Simplify right side
    21,358.16x = 563,699,133.98
  5. Step 5: Solve for x
    x = 563,699,133.98/21,358.16
  6. Step 6: Final answer
    x = 26,392.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.