Home / 10,666.02-15,999.08-5,118.06

Finding the Fourth Proportional to 10,666.02, 15,999.08 and 5,118.06

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Solution

The fourth proportional to 10,666.02, 15,999.08 and 5,118.06 is: 7,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.02 : 15,999.08 = 5,118.06 : x
  2. Step 2: Convert to fraction form
    10,666.02/15,999.08 = 5,118.06/x
  3. Step 3: Cross multiply
    10,666.02x = 15,999.08 × 5,118.06
  4. Step 4: Simplify right side
    10,666.02x = 81,884,225.79
  5. Step 5: Solve for x
    x = 81,884,225.79/10,666.02
  6. Step 6: Final answer
    x = 7,677.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.