Home / 10,332.56-15,486.16-4,778.40

Finding the Fourth Proportional to 10,332.56, 15,486.16 and 4,778.40

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Solution

The fourth proportional to 10,332.56, 15,486.16 and 4,778.40 is: 7,161.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,332.56 : 15,486.16 = 4,778.40 : x
  2. Step 2: Convert to fraction form
    10,332.56/15,486.16 = 4,778.40/x
  3. Step 3: Cross multiply
    10,332.56x = 15,486.16 × 4,778.40
  4. Step 4: Simplify right side
    10,332.56x = 73,999,066.94
  5. Step 5: Solve for x
    x = 73,999,066.94/10,332.56
  6. Step 6: Final answer
    x = 7,161.74

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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.