Home / 13,031.91-19,547.70-3,171.20

Finding the Fourth Proportional to 13,031.91, 19,547.70 and 3,171.20

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Solution

The fourth proportional to 13,031.91, 19,547.70 and 3,171.20 is: 4,756.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,031.91 : 19,547.70 = 3,171.20 : x
  2. Step 2: Convert to fraction form
    13,031.91/19,547.70 = 3,171.20/x
  3. Step 3: Cross multiply
    13,031.91x = 19,547.70 × 3,171.20
  4. Step 4: Simplify right side
    13,031.91x = 61,989,666.24
  5. Step 5: Solve for x
    x = 61,989,666.24/13,031.91
  6. Step 6: Final answer
    x = 4,756.76

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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.