Home / 28,170.99-38,880.47-16,075.40

Finding the Fourth Proportional to 28,170.99, 38,880.47 and 16,075.40

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Solution

The fourth proportional to 28,170.99, 38,880.47 and 16,075.40 is: 22,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170.99 : 38,880.47 = 16,075.40 : x
  2. Step 2: Convert to fraction form
    28,170.99/38,880.47 = 16,075.40/x
  3. Step 3: Cross multiply
    28,170.99x = 38,880.47 × 16,075.40
  4. Step 4: Simplify right side
    28,170.99x = 625,018,953.22
  5. Step 5: Solve for x
    x = 625,018,953.22/28,170.99
  6. Step 6: Final answer
    x = 22,186.62

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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.