Home / 15,581.69-21,501.93-8,506.75

Finding the Fourth Proportional to 15,581.69, 21,501.93 and 8,506.75

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Solution

The fourth proportional to 15,581.69, 21,501.93 and 8,506.75 is: 11,738.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,581.69 : 21,501.93 = 8,506.75 : x
  2. Step 2: Convert to fraction form
    15,581.69/21,501.93 = 8,506.75/x
  3. Step 3: Cross multiply
    15,581.69x = 21,501.93 × 8,506.75
  4. Step 4: Simplify right side
    15,581.69x = 182,911,543.03
  5. Step 5: Solve for x
    x = 182,911,543.03/15,581.69
  6. Step 6: Final answer
    x = 11,738.88

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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.