Home / 15,985.10-22,059.01-9,178.94

Finding the Fourth Proportional to 15,985.10, 22,059.01 and 9,178.94

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Solution

The fourth proportional to 15,985.10, 22,059.01 and 9,178.94 is: 12,666.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,985.10 : 22,059.01 = 9,178.94 : x
  2. Step 2: Convert to fraction form
    15,985.10/22,059.01 = 9,178.94/x
  3. Step 3: Cross multiply
    15,985.10x = 22,059.01 × 9,178.94
  4. Step 4: Simplify right side
    15,985.10x = 202,478,329.25
  5. Step 5: Solve for x
    x = 202,478,329.25/15,985.10
  6. Step 6: Final answer
    x = 12,666.69

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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.