Home / 21,001,354.40-31,502,031.60-17,978,045.60

Finding the Fourth Proportional to 21,001,354.40, 31,502,031.60 and 17,978,045.60

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Solution

The fourth proportional to 21,001,354.40, 31,502,031.60 and 17,978,045.60 is: 26,967,068.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001,354.40 : 31,502,031.60 = 17,978,045.60 : x
  2. Step 2: Convert to fraction form
    21,001,354.40/31,502,031.60 = 17,978,045.60/x
  3. Step 3: Cross multiply
    21,001,354.40x = 31,502,031.60 × 17,978,045.60
  4. Step 4: Simplify right side
    21,001,354.40x = 566,344,960,597,441
  5. Step 5: Solve for x
    x = 566,344,960,597,441/21,001,354.40
  6. Step 6: Final answer
    x = 26,967,068.40

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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.