Home / 12,112,478.40-18,152,128.80-9,872,990.40

Finding the Fourth Proportional to 12,112,478.40, 18,152,128.80 and 9,872,990.40

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Solution

The fourth proportional to 12,112,478.40, 18,152,128.80 and 9,872,990.40 is: 14,795,963.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,112,478.40 : 18,152,128.80 = 9,872,990.40 : x
  2. Step 2: Convert to fraction form
    12,112,478.40/18,152,128.80 = 9,872,990.40/x
  3. Step 3: Cross multiply
    12,112,478.40x = 18,152,128.80 × 9,872,990.40
  4. Step 4: Simplify right side
    12,112,478.40x = 179,215,793,381,963.53
  5. Step 5: Solve for x
    x = 179,215,793,381,963.53/12,112,478.40
  6. Step 6: Final answer
    x = 14,795,963.92

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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.