Home / 10,366,378.80-15,549,568.20-7,712,170.80

Finding the Fourth Proportional to 10,366,378.80, 15,549,568.20 and 7,712,170.80

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Solution

The fourth proportional to 10,366,378.80, 15,549,568.20 and 7,712,170.80 is: 11,568,256.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,366,378.80 : 15,549,568.20 = 7,712,170.80 : x
  2. Step 2: Convert to fraction form
    10,366,378.80/15,549,568.20 = 7,712,170.80/x
  3. Step 3: Cross multiply
    10,366,378.80x = 15,549,568.20 × 7,712,170.80
  4. Step 4: Simplify right side
    10,366,378.80x = 119,920,925,824,648.55
  5. Step 5: Solve for x
    x = 119,920,925,824,648.55/10,366,378.80
  6. Step 6: Final answer
    x = 11,568,256.20

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Similar ratio
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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.