Home / 19,920,020.40-29,880,030.60-19,770,721.20

Finding the Fourth Proportional to 19,920,020.40, 29,880,030.60 and 19,770,721.20

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Solution

The fourth proportional to 19,920,020.40, 29,880,030.60 and 19,770,721.20 is: 29,656,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920,020.40 : 29,880,030.60 = 19,770,721.20 : x
  2. Step 2: Convert to fraction form
    19,920,020.40/29,880,030.60 = 19,770,721.20/x
  3. Step 3: Cross multiply
    19,920,020.40x = 29,880,030.60 × 19,770,721.20
  4. Step 4: Simplify right side
    19,920,020.40x = 590,749,754,440,068.75
  5. Step 5: Solve for x
    x = 590,749,754,440,068.75/19,920,020.40
  6. Step 6: Final answer
    x = 29,656,081.80

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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.