Home / 19,130.12-28,689.90-13,567.08

Finding the Fourth Proportional to 19,130.12, 28,689.90 and 13,567.08

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Solution

The fourth proportional to 19,130.12, 28,689.90 and 13,567.08 is: 20,346.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,130.12 : 28,689.90 = 13,567.08 : x
  2. Step 2: Convert to fraction form
    19,130.12/28,689.90 = 13,567.08/x
  3. Step 3: Cross multiply
    19,130.12x = 28,689.90 × 13,567.08
  4. Step 4: Simplify right side
    19,130.12x = 389,238,168.49
  5. Step 5: Solve for x
    x = 389,238,168.49/19,130.12
  6. Step 6: Final answer
    x = 20,346.88

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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.