Home / 12,458,681.80-18,688,022.70-12,290,720.20

Finding the Fourth Proportional to 12,458,681.80, 18,688,022.70 and 12,290,720.20

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Solution

The fourth proportional to 12,458,681.80, 18,688,022.70 and 12,290,720.20 is: 18,436,080.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,681.80 : 18,688,022.70 = 12,290,720.20 : x
  2. Step 2: Convert to fraction form
    12,458,681.80/18,688,022.70 = 12,290,720.20/x
  3. Step 3: Cross multiply
    12,458,681.80x = 18,688,022.70 × 12,290,720.20
  4. Step 4: Simplify right side
    12,458,681.80x = 229,689,258,096,948.53
  5. Step 5: Solve for x
    x = 229,689,258,096,948.53/12,458,681.80
  6. Step 6: Final answer
    x = 18,436,080.30

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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.