Home / 20,509,864.40-30,724,246.20-17,988,366.80

Finding the Fourth Proportional to 20,509,864.40, 30,724,246.20 and 17,988,366.80

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Solution

The fourth proportional to 20,509,864.40, 30,724,246.20 and 17,988,366.80 is: 26,946,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,509,864.40 : 30,724,246.20 = 17,988,366.80 : x
  2. Step 2: Convert to fraction form
    20,509,864.40/30,724,246.20 = 17,988,366.80/x
  3. Step 3: Cross multiply
    20,509,864.40x = 30,724,246.20 × 17,988,366.80
  4. Step 4: Simplify right side
    20,509,864.40x = 552,679,010,299,106.19
  5. Step 5: Solve for x
    x = 552,679,010,299,106.19/20,509,864.40
  6. Step 6: Final answer
    x = 26,946,985.10

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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.