Home / 20,730,089.20-31,095,133.80-19,890,281.20

Finding the Fourth Proportional to 20,730,089.20, 31,095,133.80 and 19,890,281.20

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Solution

The fourth proportional to 20,730,089.20, 31,095,133.80 and 19,890,281.20 is: 29,835,421.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,089.20 : 31,095,133.80 = 19,890,281.20 : x
  2. Step 2: Convert to fraction form
    20,730,089.20/31,095,133.80 = 19,890,281.20/x
  3. Step 3: Cross multiply
    20,730,089.20x = 31,095,133.80 × 19,890,281.20
  4. Step 4: Simplify right side
    20,730,089.20x = 618,490,955,233,624.50
  5. Step 5: Solve for x
    x = 618,490,955,233,624.50/20,730,089.20
  6. Step 6: Final answer
    x = 29,835,421.80

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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.