Home / 15,986.40-22,061.34-8,913.30

Finding the Fourth Proportional to 15,986.40, 22,061.34 and 8,913.30

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Solution

The fourth proportional to 15,986.40, 22,061.34 and 8,913.30 is: 12,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,986.40 : 22,061.34 = 8,913.30 : x
  2. Step 2: Convert to fraction form
    15,986.40/22,061.34 = 8,913.30/x
  3. Step 3: Cross multiply
    15,986.40x = 22,061.34 × 8,913.30
  4. Step 4: Simplify right side
    15,986.40x = 196,639,341.82
  5. Step 5: Solve for x
    x = 196,639,341.82/15,986.40
  6. Step 6: Final answer
    x = 12,300.41

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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.