Home / 28,687,685.80-42,973,467.90-17,871,788.20

Finding the Fourth Proportional to 28,687,685.80, 42,973,467.90 and 17,871,788.20

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Solution

The fourth proportional to 28,687,685.80, 42,973,467.90 and 17,871,788.20 is: 26,771,511.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,687,685.80 : 42,973,467.90 = 17,871,788.20 : x
  2. Step 2: Convert to fraction form
    28,687,685.80/42,973,467.90 = 17,871,788.20/x
  3. Step 3: Cross multiply
    28,687,685.80x = 42,973,467.90 × 17,871,788.20
  4. Step 4: Simplify right side
    28,687,685.80x = 768,012,716,528,298.75
  5. Step 5: Solve for x
    x = 768,012,716,528,298.75/28,687,685.80
  6. Step 6: Final answer
    x = 26,771,511.72

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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.