Home / 13,185,637.20-19,778,455.80-7,800,368.40

Finding the Fourth Proportional to 13,185,637.20, 19,778,455.80 and 7,800,368.40

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Solution

The fourth proportional to 13,185,637.20, 19,778,455.80 and 7,800,368.40 is: 11,700,552.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185,637.20 : 19,778,455.80 = 7,800,368.40 : x
  2. Step 2: Convert to fraction form
    13,185,637.20/19,778,455.80 = 7,800,368.40/x
  3. Step 3: Cross multiply
    13,185,637.20x = 19,778,455.80 × 7,800,368.40
  4. Step 4: Simplify right side
    13,185,637.20x = 154,279,241,623,116.72
  5. Step 5: Solve for x
    x = 154,279,241,623,116.72/13,185,637.20
  6. Step 6: Final answer
    x = 11,700,552.60

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Similar ratio
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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.