Home / 20,199,386.30-30,299,079.45-19,880,521.70

Finding the Fourth Proportional to 20,199,386.30, 30,299,079.45 and 19,880,521.70

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Solution

The fourth proportional to 20,199,386.30, 30,299,079.45 and 19,880,521.70 is: 29,820,782.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199,386.30 : 30,299,079.45 = 19,880,521.70 : x
  2. Step 2: Convert to fraction form
    20,199,386.30/30,299,079.45 = 19,880,521.70/x
  3. Step 3: Cross multiply
    20,199,386.30x = 30,299,079.45 × 19,880,521.70
  4. Step 4: Simplify right side
    20,199,386.30x = 602,361,506,495,749
  5. Step 5: Solve for x
    x = 602,361,506,495,749/20,199,386.30
  6. Step 6: Final answer
    x = 29,820,782.55

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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.