Home / 13,315.61-18,376.65-7,651.28

Finding the Fourth Proportional to 13,315.61, 18,376.65 and 7,651.28

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Solution

The fourth proportional to 13,315.61, 18,376.65 and 7,651.28 is: 10,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.61 : 18,376.65 = 7,651.28 : x
  2. Step 2: Convert to fraction form
    13,315.61/18,376.65 = 7,651.28/x
  3. Step 3: Cross multiply
    13,315.61x = 18,376.65 × 7,651.28
  4. Step 4: Simplify right side
    13,315.61x = 140,604,940.55
  5. Step 5: Solve for x
    x = 140,604,940.55/13,315.61
  6. Step 6: Final answer
    x = 10,559.40

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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.