Home / 13,125,939.40-19,688,909.10-8,590,976.20

Finding the Fourth Proportional to 13,125,939.40, 19,688,909.10 and 8,590,976.20

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Solution

The fourth proportional to 13,125,939.40, 19,688,909.10 and 8,590,976.20 is: 12,886,464.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125,939.40 : 19,688,909.10 = 8,590,976.20 : x
  2. Step 2: Convert to fraction form
    13,125,939.40/19,688,909.10 = 8,590,976.20/x
  3. Step 3: Cross multiply
    13,125,939.40x = 19,688,909.10 × 8,590,976.20
  4. Step 4: Simplify right side
    13,125,939.40x = 169,146,949,482,063.41
  5. Step 5: Solve for x
    x = 169,146,949,482,063.41/13,125,939.40
  6. Step 6: Final answer
    x = 12,886,464.30

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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.