Home / 30,281.04-45,445.08-20,986.14

Finding the Fourth Proportional to 30,281.04, 45,445.08 and 20,986.14

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Solution

The fourth proportional to 30,281.04, 45,445.08 and 20,986.14 is: 31,495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.04 : 45,445.08 = 20,986.14 : x
  2. Step 2: Convert to fraction form
    30,281.04/45,445.08 = 20,986.14/x
  3. Step 3: Cross multiply
    30,281.04x = 45,445.08 × 20,986.14
  4. Step 4: Simplify right side
    30,281.04x = 953,716,811.19
  5. Step 5: Solve for x
    x = 953,716,811.19/30,281.04
  6. Step 6: Final answer
    x = 31,495.51

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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.