Home / 21,000,984.90-31,501,477.35-13,115,975.10

Finding the Fourth Proportional to 21,000,984.90, 31,501,477.35 and 13,115,975.10

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Solution

The fourth proportional to 21,000,984.90, 31,501,477.35 and 13,115,975.10 is: 19,673,962.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000,984.90 : 31,501,477.35 = 13,115,975.10 : x
  2. Step 2: Convert to fraction form
    21,000,984.90/31,501,477.35 = 13,115,975.10/x
  3. Step 3: Cross multiply
    21,000,984.90x = 31,501,477.35 × 13,115,975.10
  4. Step 4: Simplify right side
    21,000,984.90x = 413,172,592,535,814
  5. Step 5: Solve for x
    x = 413,172,592,535,814/21,000,984.90
  6. Step 6: Final answer
    x = 19,673,962.65

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Double scale
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1.5x scale

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.