Home / 13,480,985.60-20,221,478.40-12,790,112.30

Finding the Fourth Proportional to 13,480,985.60, 20,221,478.40 and 12,790,112.30

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Solution

The fourth proportional to 13,480,985.60, 20,221,478.40 and 12,790,112.30 is: 19,185,168.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480,985.60 : 20,221,478.40 = 12,790,112.30 : x
  2. Step 2: Convert to fraction form
    13,480,985.60/20,221,478.40 = 12,790,112.30/x
  3. Step 3: Cross multiply
    13,480,985.60x = 20,221,478.40 × 12,790,112.30
  4. Step 4: Simplify right side
    13,480,985.60x = 258,634,979,608,024.31
  5. Step 5: Solve for x
    x = 258,634,979,608,024.31/13,480,985.60
  6. Step 6: Final answer
    x = 19,185,168.45

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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.