Home / 20,946.42-31,430.34-13,931.24

Finding the Fourth Proportional to 20,946.42, 31,430.34 and 13,931.24

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Solution

The fourth proportional to 20,946.42, 31,430.34 and 13,931.24 is: 20,903.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.42 : 31,430.34 = 13,931.24 : x
  2. Step 2: Convert to fraction form
    20,946.42/31,430.34 = 13,931.24/x
  3. Step 3: Cross multiply
    20,946.42x = 31,430.34 × 13,931.24
  4. Step 4: Simplify right side
    20,946.42x = 437,863,452.67
  5. Step 5: Solve for x
    x = 437,863,452.67/20,946.42
  6. Step 6: Final answer
    x = 20,903.98

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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.