Home / 15,237.29-21,007.87-12,684.87

Finding the Fourth Proportional to 15,237.29, 21,007.87 and 12,684.87

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Solution

The fourth proportional to 15,237.29, 21,007.87 and 12,684.87 is: 17,488.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,237.29 : 21,007.87 = 12,684.87 : x
  2. Step 2: Convert to fraction form
    15,237.29/21,007.87 = 12,684.87/x
  3. Step 3: Cross multiply
    15,237.29x = 21,007.87 × 12,684.87
  4. Step 4: Simplify right side
    15,237.29x = 266,482,068.21
  5. Step 5: Solve for x
    x = 266,482,068.21/15,237.29
  6. Step 6: Final answer
    x = 17,488.81

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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.