Home / 15,547.28-21,455.83-8,834.05

Finding the Fourth Proportional to 15,547.28, 21,455.83 and 8,834.05

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Solution

The fourth proportional to 15,547.28, 21,455.83 and 8,834.05 is: 12,191.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.28 : 21,455.83 = 8,834.05 : x
  2. Step 2: Convert to fraction form
    15,547.28/21,455.83 = 8,834.05/x
  3. Step 3: Cross multiply
    15,547.28x = 21,455.83 × 8,834.05
  4. Step 4: Simplify right side
    15,547.28x = 189,541,799.29
  5. Step 5: Solve for x
    x = 189,541,799.29/15,547.28
  6. Step 6: Final answer
    x = 12,191.31

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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.