Home / 15,860.17-21,887.02-9,145.70

Finding the Fourth Proportional to 15,860.17, 21,887.02 and 9,145.70

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Solution

The fourth proportional to 15,860.17, 21,887.02 and 9,145.70 is: 12,621.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.17 : 21,887.02 = 9,145.70 : x
  2. Step 2: Convert to fraction form
    15,860.17/21,887.02 = 9,145.70/x
  3. Step 3: Cross multiply
    15,860.17x = 21,887.02 × 9,145.70
  4. Step 4: Simplify right side
    15,860.17x = 200,172,118.81
  5. Step 5: Solve for x
    x = 200,172,118.81/15,860.17
  6. Step 6: Final answer
    x = 12,621.06

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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.