Home / 14,722.40-20,320.08-9,687.08

Finding the Fourth Proportional to 14,722.40, 20,320.08 and 9,687.08

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Solution

The fourth proportional to 14,722.40, 20,320.08 and 9,687.08 is: 13,370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,722.40 : 20,320.08 = 9,687.08 : x
  2. Step 2: Convert to fraction form
    14,722.40/20,320.08 = 9,687.08/x
  3. Step 3: Cross multiply
    14,722.40x = 20,320.08 × 9,687.08
  4. Step 4: Simplify right side
    14,722.40x = 196,842,240.57
  5. Step 5: Solve for x
    x = 196,842,240.57/14,722.40
  6. Step 6: Final answer
    x = 13,370.25

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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.