Home / 13,312.23-18,369.56-7,860.45

Finding the Fourth Proportional to 13,312.23, 18,369.56 and 7,860.45

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Solution

The fourth proportional to 13,312.23, 18,369.56 and 7,860.45 is: 10,846.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.23 : 18,369.56 = 7,860.45 : x
  2. Step 2: Convert to fraction form
    13,312.23/18,369.56 = 7,860.45/x
  3. Step 3: Cross multiply
    13,312.23x = 18,369.56 × 7,860.45
  4. Step 4: Simplify right side
    13,312.23x = 144,392,968.60
  5. Step 5: Solve for x
    x = 144,392,968.60/13,312.23
  6. Step 6: Final answer
    x = 10,846.64

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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.