Home / 20,698,641.24-31,013,638.47-12,587,080.11

Finding the Fourth Proportional to 20,698,641.24, 31,013,638.47 and 12,587,080.11

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Solution

The fourth proportional to 20,698,641.24, 31,013,638.47 and 12,587,080.11 is: 18,859,747.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698,641.24 : 31,013,638.47 = 12,587,080.11 : x
  2. Step 2: Convert to fraction form
    20,698,641.24/31,013,638.47 = 12,587,080.11/x
  3. Step 3: Cross multiply
    20,698,641.24x = 31,013,638.47 × 12,587,080.11
  4. Step 4: Simplify right side
    20,698,641.24x = 390,371,151,924,467.81
  5. Step 5: Solve for x
    x = 390,371,151,924,467.81/20,698,641.24
  6. Step 6: Final answer
    x = 18,859,747.72

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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.