Home / 15,701.09-21,668.70-8,988.81

Finding the Fourth Proportional to 15,701.09, 21,668.70 and 8,988.81

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Solution

The fourth proportional to 15,701.09, 21,668.70 and 8,988.81 is: 12,405.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.09 : 21,668.70 = 8,988.81 : x
  2. Step 2: Convert to fraction form
    15,701.09/21,668.70 = 8,988.81/x
  3. Step 3: Cross multiply
    15,701.09x = 21,668.70 × 8,988.81
  4. Step 4: Simplify right side
    15,701.09x = 194,775,827.25
  5. Step 5: Solve for x
    x = 194,775,827.25/15,701.09
  6. Step 6: Final answer
    x = 12,405.25

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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.