Home / 13,931.31-20,898.80-7,357.76

Finding the Fourth Proportional to 13,931.31, 20,898.80 and 7,357.76

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Solution

The fourth proportional to 13,931.31, 20,898.80 and 7,357.76 is: 11,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.31 : 20,898.80 = 7,357.76 : x
  2. Step 2: Convert to fraction form
    13,931.31/20,898.80 = 7,357.76/x
  3. Step 3: Cross multiply
    13,931.31x = 20,898.80 × 7,357.76
  4. Step 4: Simplify right side
    13,931.31x = 153,768,213.41
  5. Step 5: Solve for x
    x = 153,768,213.41/13,931.31
  6. Step 6: Final answer
    x = 11,037.60

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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.