Home / 10,999.16-15,158.48-7,812.59

Finding the Fourth Proportional to 10,999.16, 15,158.48 and 7,812.59

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Solution

The fourth proportional to 10,999.16, 15,158.48 and 7,812.59 is: 10,766.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.16 : 15,158.48 = 7,812.59 : x
  2. Step 2: Convert to fraction form
    10,999.16/15,158.48 = 7,812.59/x
  3. Step 3: Cross multiply
    10,999.16x = 15,158.48 × 7,812.59
  4. Step 4: Simplify right side
    10,999.16x = 118,426,988.10
  5. Step 5: Solve for x
    x = 118,426,988.10/10,999.16
  6. Step 6: Final answer
    x = 10,766.92

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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.