Home / 20,658,839.40-30,988,259.10-15,890,596.20

Finding the Fourth Proportional to 20,658,839.40, 30,988,259.10 and 15,890,596.20

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Solution

The fourth proportional to 20,658,839.40, 30,988,259.10 and 15,890,596.20 is: 23,835,894.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658,839.40 : 30,988,259.10 = 15,890,596.20 : x
  2. Step 2: Convert to fraction form
    20,658,839.40/30,988,259.10 = 15,890,596.20/x
  3. Step 3: Cross multiply
    20,658,839.40x = 30,988,259.10 × 15,890,596.20
  4. Step 4: Simplify right side
    20,658,839.40x = 492,421,912,299,075.44
  5. Step 5: Solve for x
    x = 492,421,912,299,075.44/20,658,839.40
  6. Step 6: Final answer
    x = 23,835,894.30

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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.