Home / 10,445.80-15,636.30-9,279.40

Finding the Fourth Proportional to 10,445.80, 15,636.30 and 9,279.40

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Solution

The fourth proportional to 10,445.80, 15,636.30 and 9,279.40 is: 13,890.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,445.80 : 15,636.30 = 9,279.40 : x
  2. Step 2: Convert to fraction form
    10,445.80/15,636.30 = 9,279.40/x
  3. Step 3: Cross multiply
    10,445.80x = 15,636.30 × 9,279.40
  4. Step 4: Simplify right side
    10,445.80x = 145,095,482.22
  5. Step 5: Solve for x
    x = 145,095,482.22/10,445.80
  6. Step 6: Final answer
    x = 13,890.32

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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.