Home / 28,006,468.80-42,009,703.20-17,920,478.40

Finding the Fourth Proportional to 28,006,468.80, 42,009,703.20 and 17,920,478.40

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Solution

The fourth proportional to 28,006,468.80, 42,009,703.20 and 17,920,478.40 is: 26,880,717.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,006,468.80 : 42,009,703.20 = 17,920,478.40 : x
  2. Step 2: Convert to fraction form
    28,006,468.80/42,009,703.20 = 17,920,478.40/x
  3. Step 3: Cross multiply
    28,006,468.80x = 42,009,703.20 × 17,920,478.40
  4. Step 4: Simplify right side
    28,006,468.80x = 752,833,978,786,010.88
  5. Step 5: Solve for x
    x = 752,833,978,786,010.88/28,006,468.80
  6. Step 6: Final answer
    x = 26,880,717.60

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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.