Home / 15,417.89-21,277.08-8,703.65

Finding the Fourth Proportional to 15,417.89, 21,277.08 and 8,703.65

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Solution

The fourth proportional to 15,417.89, 21,277.08 and 8,703.65 is: 12,011.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.89 : 21,277.08 = 8,703.65 : x
  2. Step 2: Convert to fraction form
    15,417.89/21,277.08 = 8,703.65/x
  3. Step 3: Cross multiply
    15,417.89x = 21,277.08 × 8,703.65
  4. Step 4: Simplify right side
    15,417.89x = 185,188,310.53
  5. Step 5: Solve for x
    x = 185,188,310.53/15,417.89
  6. Step 6: Final answer
    x = 12,011.26

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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.