Home / 13,981.08-19,315.08-10,438.14

Finding the Fourth Proportional to 13,981.08, 19,315.08 and 10,438.14

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Solution

The fourth proportional to 13,981.08, 19,315.08 and 10,438.14 is: 14,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.08 : 19,315.08 = 10,438.14 : x
  2. Step 2: Convert to fraction form
    13,981.08/19,315.08 = 10,438.14/x
  3. Step 3: Cross multiply
    13,981.08x = 19,315.08 × 10,438.14
  4. Step 4: Simplify right side
    13,981.08x = 201,613,509.15
  5. Step 5: Solve for x
    x = 201,613,509.15/13,981.08
  6. Step 6: Final answer
    x = 14,420.45

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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.