Home / 13,788.48-20,666.28-9,605.84

Finding the Fourth Proportional to 13,788.48, 20,666.28 and 9,605.84

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Solution

The fourth proportional to 13,788.48, 20,666.28 and 9,605.84 is: 14,397.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.48 : 20,666.28 = 9,605.84 : x
  2. Step 2: Convert to fraction form
    13,788.48/20,666.28 = 9,605.84/x
  3. Step 3: Cross multiply
    13,788.48x = 20,666.28 × 9,605.84
  4. Step 4: Simplify right side
    13,788.48x = 198,516,979.08
  5. Step 5: Solve for x
    x = 198,516,979.08/13,788.48
  6. Step 6: Final answer
    x = 14,397.31

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1.5x scale

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.