Home / 13,931.12-20,898.51-7,357.57

Finding the Fourth Proportional to 13,931.12, 20,898.51 and 7,357.57

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Solution

The fourth proportional to 13,931.12, 20,898.51 and 7,357.57 is: 11,037.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.12 : 20,898.51 = 7,357.57 : x
  2. Step 2: Convert to fraction form
    13,931.12/20,898.51 = 7,357.57/x
  3. Step 3: Cross multiply
    13,931.12x = 20,898.51 × 7,357.57
  4. Step 4: Simplify right side
    13,931.12x = 153,762,170.38
  5. Step 5: Solve for x
    x = 153,762,170.38/13,931.12
  6. Step 6: Final answer
    x = 11,037.31

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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.