Home / 13,019.10-19,528.65-11,139.90

Finding the Fourth Proportional to 13,019.10, 19,528.65 and 11,139.90

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Solution

The fourth proportional to 13,019.10, 19,528.65 and 11,139.90 is: 16,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,019.10 : 19,528.65 = 11,139.90 : x
  2. Step 2: Convert to fraction form
    13,019.10/19,528.65 = 11,139.90/x
  3. Step 3: Cross multiply
    13,019.10x = 19,528.65 × 11,139.90
  4. Step 4: Simplify right side
    13,019.10x = 217,547,208.14
  5. Step 5: Solve for x
    x = 217,547,208.14/13,019.10
  6. Step 6: Final answer
    x = 16,709.85

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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.