Home / 20,404.80-30,643.65-14,864.40

Finding the Fourth Proportional to 20,404.80, 30,643.65 and 14,864.40

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Solution

The fourth proportional to 20,404.80, 30,643.65 and 14,864.40 is: 22,323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.80 : 30,643.65 = 14,864.40 : x
  2. Step 2: Convert to fraction form
    20,404.80/30,643.65 = 14,864.40/x
  3. Step 3: Cross multiply
    20,404.80x = 30,643.65 × 14,864.40
  4. Step 4: Simplify right side
    20,404.80x = 455,499,471.06
  5. Step 5: Solve for x
    x = 455,499,471.06/20,404.80
  6. Step 6: Final answer
    x = 22,323.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.