Home / 28,505.27-39,337.01-15,758.79

Finding the Fourth Proportional to 28,505.27, 39,337.01 and 15,758.79

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Solution

The fourth proportional to 28,505.27, 39,337.01 and 15,758.79 is: 21,746.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,505.27 : 39,337.01 = 15,758.79 : x
  2. Step 2: Convert to fraction form
    28,505.27/39,337.01 = 15,758.79/x
  3. Step 3: Cross multiply
    28,505.27x = 39,337.01 × 15,758.79
  4. Step 4: Simplify right side
    28,505.27x = 619,903,483.13
  5. Step 5: Solve for x
    x = 619,903,483.13/28,505.27
  6. Step 6: Final answer
    x = 21,746.98

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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.