Home / 13,475,521.20-20,213,281.80-7,407,908.40

Finding the Fourth Proportional to 13,475,521.20, 20,213,281.80 and 7,407,908.40

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Solution

The fourth proportional to 13,475,521.20, 20,213,281.80 and 7,407,908.40 is: 11,111,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,475,521.20 : 20,213,281.80 = 7,407,908.40 : x
  2. Step 2: Convert to fraction form
    13,475,521.20/20,213,281.80 = 7,407,908.40/x
  3. Step 3: Cross multiply
    13,475,521.20x = 20,213,281.80 × 7,407,908.40
  4. Step 4: Simplify right side
    13,475,521.20x = 149,738,140,037,787.12
  5. Step 5: Solve for x
    x = 149,738,140,037,787.12/13,475,521.20
  6. Step 6: Final answer
    x = 11,111,862.60

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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.