Home / 10,200,421.80-15,300,632.70-7,888,653.45

Finding the Fourth Proportional to 10,200,421.80, 15,300,632.70 and 7,888,653.45

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Solution

The fourth proportional to 10,200,421.80, 15,300,632.70 and 7,888,653.45 is: 11,832,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,200,421.80 : 15,300,632.70 = 7,888,653.45 : x
  2. Step 2: Convert to fraction form
    10,200,421.80/15,300,632.70 = 7,888,653.45/x
  3. Step 3: Cross multiply
    10,200,421.80x = 15,300,632.70 × 7,888,653.45
  4. Step 4: Simplify right side
    10,200,421.80x = 120,701,388,936,037.81
  5. Step 5: Solve for x
    x = 120,701,388,936,037.81/10,200,421.80
  6. Step 6: Final answer
    x = 11,832,980.18

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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.