Home / 14,889.42-20,547.81-8,920.80

Finding the Fourth Proportional to 14,889.42, 20,547.81 and 8,920.80

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Solution

The fourth proportional to 14,889.42, 20,547.81 and 8,920.80 is: 12,310.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,889.42 : 20,547.81 = 8,920.80 : x
  2. Step 2: Convert to fraction form
    14,889.42/20,547.81 = 8,920.80/x
  3. Step 3: Cross multiply
    14,889.42x = 20,547.81 × 8,920.80
  4. Step 4: Simplify right side
    14,889.42x = 183,302,903.45
  5. Step 5: Solve for x
    x = 183,302,903.45/14,889.42
  6. Step 6: Final answer
    x = 12,310.95

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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.