Home / 20,455.12-30,637.71-16,904.89

Finding the Fourth Proportional to 20,455.12, 30,637.71 and 16,904.89

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Solution

The fourth proportional to 20,455.12, 30,637.71 and 16,904.89 is: 25,320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.12 : 30,637.71 = 16,904.89 : x
  2. Step 2: Convert to fraction form
    20,455.12/30,637.71 = 16,904.89/x
  3. Step 3: Cross multiply
    20,455.12x = 30,637.71 × 16,904.89
  4. Step 4: Simplify right side
    20,455.12x = 517,927,117.40
  5. Step 5: Solve for x
    x = 517,927,117.40/20,455.12
  6. Step 6: Final answer
    x = 25,320.17

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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.