Home / 14,515.89-20,031.35-8,547.81

Finding the Fourth Proportional to 14,515.89, 20,031.35 and 8,547.81

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Solution

The fourth proportional to 14,515.89, 20,031.35 and 8,547.81 is: 11,795.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.89 : 20,031.35 = 8,547.81 : x
  2. Step 2: Convert to fraction form
    14,515.89/20,031.35 = 8,547.81/x
  3. Step 3: Cross multiply
    14,515.89x = 20,031.35 × 8,547.81
  4. Step 4: Simplify right side
    14,515.89x = 171,224,131.10
  5. Step 5: Solve for x
    x = 171,224,131.10/14,515.89
  6. Step 6: Final answer
    x = 11,795.63

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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.