Home / 13,547.80-20,307.84-9,165.72

Finding the Fourth Proportional to 13,547.80, 20,307.84 and 9,165.72

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Solution

The fourth proportional to 13,547.80, 20,307.84 and 9,165.72 is: 13,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.80 : 20,307.84 = 9,165.72 : x
  2. Step 2: Convert to fraction form
    13,547.80/20,307.84 = 9,165.72/x
  3. Step 3: Cross multiply
    13,547.80x = 20,307.84 × 9,165.72
  4. Step 4: Simplify right side
    13,547.80x = 186,135,975.24
  5. Step 5: Solve for x
    x = 186,135,975.24/13,547.80
  6. Step 6: Final answer
    x = 13,739.20

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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.