Home / 15,526.50-21,426.48-8,813.40

Finding the Fourth Proportional to 15,526.50, 21,426.48 and 8,813.40

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Solution

The fourth proportional to 15,526.50, 21,426.48 and 8,813.40 is: 12,162.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,526.50 : 21,426.48 = 8,813.40 : x
  2. Step 2: Convert to fraction form
    15,526.50/21,426.48 = 8,813.40/x
  3. Step 3: Cross multiply
    15,526.50x = 21,426.48 × 8,813.40
  4. Step 4: Simplify right side
    15,526.50x = 188,840,138.83
  5. Step 5: Solve for x
    x = 188,840,138.83/15,526.50
  6. Step 6: Final answer
    x = 12,162.44

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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.