Home / 20,904.84-31,341.90-10,506.12

Finding the Fourth Proportional to 20,904.84, 31,341.90 and 10,506.12

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Solution

The fourth proportional to 20,904.84, 31,341.90 and 10,506.12 is: 15,751.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.84 : 31,341.90 = 10,506.12 : x
  2. Step 2: Convert to fraction form
    20,904.84/31,341.90 = 10,506.12/x
  3. Step 3: Cross multiply
    20,904.84x = 31,341.90 × 10,506.12
  4. Step 4: Simplify right side
    20,904.84x = 329,281,762.43
  5. Step 5: Solve for x
    x = 329,281,762.43/20,904.84
  6. Step 6: Final answer
    x = 15,751.46

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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.