Home / 30,501.60-45,771.72-12,971.40

Finding the Fourth Proportional to 30,501.60, 45,771.72 and 12,971.40

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Solution

The fourth proportional to 30,501.60, 45,771.72 and 12,971.40 is: 19,465.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,501.60 : 45,771.72 = 12,971.40 : x
  2. Step 2: Convert to fraction form
    30,501.60/45,771.72 = 12,971.40/x
  3. Step 3: Cross multiply
    30,501.60x = 45,771.72 × 12,971.40
  4. Step 4: Simplify right side
    30,501.60x = 593,723,288.81
  5. Step 5: Solve for x
    x = 593,723,288.81/30,501.60
  6. Step 6: Final answer
    x = 19,465.32

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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.