Home / 15,473.91-21,271.89-13,312.57

Finding the Fourth Proportional to 15,473.91, 21,271.89 and 13,312.57

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Solution

The fourth proportional to 15,473.91, 21,271.89 and 13,312.57 is: 18,300.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,473.91 : 21,271.89 = 13,312.57 : x
  2. Step 2: Convert to fraction form
    15,473.91/21,271.89 = 13,312.57/x
  3. Step 3: Cross multiply
    15,473.91x = 21,271.89 × 13,312.57
  4. Step 4: Simplify right side
    15,473.91x = 283,183,404.91
  5. Step 5: Solve for x
    x = 283,183,404.91/15,473.91
  6. Step 6: Final answer
    x = 18,300.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.