Home / 18,421.28-25,421.36-10,037.76

Finding the Fourth Proportional to 18,421.28, 25,421.36 and 10,037.76

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Solution

The fourth proportional to 18,421.28, 25,421.36 and 10,037.76 is: 13,852.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.28 : 25,421.36 = 10,037.76 : x
  2. Step 2: Convert to fraction form
    18,421.28/25,421.36 = 10,037.76/x
  3. Step 3: Cross multiply
    18,421.28x = 25,421.36 × 10,037.76
  4. Step 4: Simplify right side
    18,421.28x = 255,173,510.55
  5. Step 5: Solve for x
    x = 255,173,510.55/18,421.28
  6. Step 6: Final answer
    x = 13,852.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.