Home / 15,700.87-21,675.63-12,107.98

Finding the Fourth Proportional to 15,700.87, 21,675.63 and 12,107.98

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Solution

The fourth proportional to 15,700.87, 21,675.63 and 12,107.98 is: 16,715.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,700.87 : 21,675.63 = 12,107.98 : x
  2. Step 2: Convert to fraction form
    15,700.87/21,675.63 = 12,107.98/x
  3. Step 3: Cross multiply
    15,700.87x = 21,675.63 × 12,107.98
  4. Step 4: Simplify right side
    15,700.87x = 262,448,094.53
  5. Step 5: Solve for x
    x = 262,448,094.53/15,700.87
  6. Step 6: Final answer
    x = 16,715.51

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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.