Home / 20,160,012.70-30,240,019.05-18,406,257.40

Finding the Fourth Proportional to 20,160,012.70, 30,240,019.05 and 18,406,257.40

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Solution

The fourth proportional to 20,160,012.70, 30,240,019.05 and 18,406,257.40 is: 27,609,386.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,160,012.70 : 30,240,019.05 = 18,406,257.40 : x
  2. Step 2: Convert to fraction form
    20,160,012.70/30,240,019.05 = 18,406,257.40/x
  3. Step 3: Cross multiply
    20,160,012.70x = 30,240,019.05 × 18,406,257.40
  4. Step 4: Simplify right side
    20,160,012.70x = 556,605,574,415,203.44
  5. Step 5: Solve for x
    x = 556,605,574,415,203.44/20,160,012.70
  6. Step 6: Final answer
    x = 27,609,386.10

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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.