Home / 14,208.18-19,607.31-7,920.42

Finding the Fourth Proportional to 14,208.18, 19,607.31 and 7,920.42

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Solution

The fourth proportional to 14,208.18, 19,607.31 and 7,920.42 is: 10,930.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,208.18 : 19,607.31 = 7,920.42 : x
  2. Step 2: Convert to fraction form
    14,208.18/19,607.31 = 7,920.42/x
  3. Step 3: Cross multiply
    14,208.18x = 19,607.31 × 7,920.42
  4. Step 4: Simplify right side
    14,208.18x = 155,298,130.27
  5. Step 5: Solve for x
    x = 155,298,130.27/14,208.18
  6. Step 6: Final answer
    x = 10,930.19

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Half scale
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Double scale
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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.