Home / 30,206.40-45,318.72-9,430.08

Finding the Fourth Proportional to 30,206.40, 45,318.72 and 9,430.08

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Solution

The fourth proportional to 30,206.40, 45,318.72 and 9,430.08 is: 14,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,206.40 : 45,318.72 = 9,430.08 : x
  2. Step 2: Convert to fraction form
    30,206.40/45,318.72 = 9,430.08/x
  3. Step 3: Cross multiply
    30,206.40x = 45,318.72 × 9,430.08
  4. Step 4: Simplify right side
    30,206.40x = 427,359,155.10
  5. Step 5: Solve for x
    x = 427,359,155.10/30,206.40
  6. Step 6: Final answer
    x = 14,147.97

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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.