Home / 11,316.29-15,615.94-6,280.45

Finding the Fourth Proportional to 11,316.29, 15,615.94 and 6,280.45

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Solution

The fourth proportional to 11,316.29, 15,615.94 and 6,280.45 is: 8,666.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.29 : 15,615.94 = 6,280.45 : x
  2. Step 2: Convert to fraction form
    11,316.29/15,615.94 = 6,280.45/x
  3. Step 3: Cross multiply
    11,316.29x = 15,615.94 × 6,280.45
  4. Step 4: Simplify right side
    11,316.29x = 98,075,130.37
  5. Step 5: Solve for x
    x = 98,075,130.37/11,316.29
  6. Step 6: Final answer
    x = 8,666.72

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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.