Home / 15,508.36-21,402.66-9,135.28

Finding the Fourth Proportional to 15,508.36, 21,402.66 and 9,135.28

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Solution

The fourth proportional to 15,508.36, 21,402.66 and 9,135.28 is: 12,607.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.36 : 21,402.66 = 9,135.28 : x
  2. Step 2: Convert to fraction form
    15,508.36/21,402.66 = 9,135.28/x
  3. Step 3: Cross multiply
    15,508.36x = 21,402.66 × 9,135.28
  4. Step 4: Simplify right side
    15,508.36x = 195,519,291.84
  5. Step 5: Solve for x
    x = 195,519,291.84/15,508.36
  6. Step 6: Final answer
    x = 12,607.35

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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.