Home / 13,790.28-19,041.72-8,488.08

Finding the Fourth Proportional to 13,790.28, 19,041.72 and 8,488.08

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Solution

The fourth proportional to 13,790.28, 19,041.72 and 8,488.08 is: 11,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.28 : 19,041.72 = 8,488.08 : x
  2. Step 2: Convert to fraction form
    13,790.28/19,041.72 = 8,488.08/x
  3. Step 3: Cross multiply
    13,790.28x = 19,041.72 × 8,488.08
  4. Step 4: Simplify right side
    13,790.28x = 161,627,642.70
  5. Step 5: Solve for x
    x = 161,627,642.70/13,790.28
  6. Step 6: Final answer
    x = 11,720.40

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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.