Home / 28,464.55-39,281.18-15,717.51

Finding the Fourth Proportional to 28,464.55, 39,281.18 and 15,717.51

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Solution

The fourth proportional to 28,464.55, 39,281.18 and 15,717.51 is: 21,690.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.55 : 39,281.18 = 15,717.51 : x
  2. Step 2: Convert to fraction form
    28,464.55/39,281.18 = 15,717.51/x
  3. Step 3: Cross multiply
    28,464.55x = 39,281.18 × 15,717.51
  4. Step 4: Simplify right side
    28,464.55x = 617,402,260.87
  5. Step 5: Solve for x
    x = 617,402,260.87/28,464.55
  6. Step 6: Final answer
    x = 21,690.22

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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.