Home / 10,918.64-15,068.34-6,445.04

Finding the Fourth Proportional to 10,918.64, 15,068.34 and 6,445.04

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Solution

The fourth proportional to 10,918.64, 15,068.34 and 6,445.04 is: 8,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.64 : 15,068.34 = 6,445.04 : x
  2. Step 2: Convert to fraction form
    10,918.64/15,068.34 = 6,445.04/x
  3. Step 3: Cross multiply
    10,918.64x = 15,068.34 × 6,445.04
  4. Step 4: Simplify right side
    10,918.64x = 97,116,054.03
  5. Step 5: Solve for x
    x = 97,116,054.03/10,918.64
  6. Step 6: Final answer
    x = 8,894.52

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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.