Home / 10,277.40-15,416.10-8,722.20

Finding the Fourth Proportional to 10,277.40, 15,416.10 and 8,722.20

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Solution

The fourth proportional to 10,277.40, 15,416.10 and 8,722.20 is: 13,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,277.40 : 15,416.10 = 8,722.20 : x
  2. Step 2: Convert to fraction form
    10,277.40/15,416.10 = 8,722.20/x
  3. Step 3: Cross multiply
    10,277.40x = 15,416.10 × 8,722.20
  4. Step 4: Simplify right side
    10,277.40x = 134,462,307.42
  5. Step 5: Solve for x
    x = 134,462,307.42/10,277.40
  6. Step 6: Final answer
    x = 13,083.30

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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.