Home / 12,802.02-17,666.24-7,137.40

Finding the Fourth Proportional to 12,802.02, 17,666.24 and 7,137.40

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Solution

The fourth proportional to 12,802.02, 17,666.24 and 7,137.40 is: 9,849.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,802.02 : 17,666.24 = 7,137.40 : x
  2. Step 2: Convert to fraction form
    12,802.02/17,666.24 = 7,137.40/x
  3. Step 3: Cross multiply
    12,802.02x = 17,666.24 × 7,137.40
  4. Step 4: Simplify right side
    12,802.02x = 126,091,021.38
  5. Step 5: Solve for x
    x = 126,091,021.38/12,802.02
  6. Step 6: Final answer
    x = 9,849.31

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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.