Home / 28,507.48-39,341.14-15,931.96

Finding the Fourth Proportional to 28,507.48, 39,341.14 and 15,931.96

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Solution

The fourth proportional to 28,507.48, 39,341.14 and 15,931.96 is: 21,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.48 : 39,341.14 = 15,931.96 : x
  2. Step 2: Convert to fraction form
    28,507.48/39,341.14 = 15,931.96/x
  3. Step 3: Cross multiply
    28,507.48x = 39,341.14 × 15,931.96
  4. Step 4: Simplify right side
    28,507.48x = 626,781,468.83
  5. Step 5: Solve for x
    x = 626,781,468.83/28,507.48
  6. Step 6: Final answer
    x = 21,986.56

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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.