Home / 10,338.55-15,515.64-7,572.40

Finding the Fourth Proportional to 10,338.55, 15,515.64 and 7,572.40

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Solution

The fourth proportional to 10,338.55, 15,515.64 and 7,572.40 is: 11,364.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,338.55 : 15,515.64 = 7,572.40 : x
  2. Step 2: Convert to fraction form
    10,338.55/15,515.64 = 7,572.40/x
  3. Step 3: Cross multiply
    10,338.55x = 15,515.64 × 7,572.40
  4. Step 4: Simplify right side
    10,338.55x = 117,490,593.55
  5. Step 5: Solve for x
    x = 117,490,593.55/10,338.55
  6. Step 6: Final answer
    x = 11,364.32

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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.