Home / 10,858.04-14,985-6,143.22

Finding the Fourth Proportional to 10,858.04, 14,985 and 6,143.22

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Solution

The fourth proportional to 10,858.04, 14,985 and 6,143.22 is: 8,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.04 : 14,985 = 6,143.22 : x
  2. Step 2: Convert to fraction form
    10,858.04/14,985 = 6,143.22/x
  3. Step 3: Cross multiply
    10,858.04x = 14,985 × 6,143.22
  4. Step 4: Simplify right side
    10,858.04x = 92,056,151.70
  5. Step 5: Solve for x
    x = 92,056,151.70/10,858.04
  6. Step 6: Final answer
    x = 8,478.16

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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.