Home / 28,011.63-38,655.86-15,436.38

Finding the Fourth Proportional to 28,011.63, 38,655.86 and 15,436.38

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Solution

The fourth proportional to 28,011.63, 38,655.86 and 15,436.38 is: 21,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,011.63 : 38,655.86 = 15,436.38 : x
  2. Step 2: Convert to fraction form
    28,011.63/38,655.86 = 15,436.38/x
  3. Step 3: Cross multiply
    28,011.63x = 38,655.86 × 15,436.38
  4. Step 4: Simplify right side
    28,011.63x = 596,706,544.19
  5. Step 5: Solve for x
    x = 596,706,544.19/28,011.63
  6. Step 6: Final answer
    x = 21,302.10

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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.