Home / 13,878,005.20-20,817,007.80-12,508,068.40

Finding the Fourth Proportional to 13,878,005.20, 20,817,007.80 and 12,508,068.40

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Solution

The fourth proportional to 13,878,005.20, 20,817,007.80 and 12,508,068.40 is: 18,762,102.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878,005.20 : 20,817,007.80 = 12,508,068.40 : x
  2. Step 2: Convert to fraction form
    13,878,005.20/20,817,007.80 = 12,508,068.40/x
  3. Step 3: Cross multiply
    13,878,005.20x = 20,817,007.80 × 12,508,068.40
  4. Step 4: Simplify right side
    13,878,005.20x = 260,380,557,445,733.53
  5. Step 5: Solve for x
    x = 260,380,557,445,733.53/13,878,005.20
  6. Step 6: Final answer
    x = 18,762,102.60

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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.