Home / 21,136,358.12-29,168,178.42-12,876,420.10

Finding the Fourth Proportional to 21,136,358.12, 29,168,178.42 and 12,876,420.10

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Solution

The fourth proportional to 21,136,358.12, 29,168,178.42 and 12,876,420.10 is: 17,769,462.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136,358.12 : 29,168,178.42 = 12,876,420.10 : x
  2. Step 2: Convert to fraction form
    21,136,358.12/29,168,178.42 = 12,876,420.10/x
  3. Step 3: Cross multiply
    21,136,358.12x = 29,168,178.42 × 12,876,420.10
  4. Step 4: Simplify right side
    21,136,358.12x = 375,581,718,887,674.25
  5. Step 5: Solve for x
    x = 375,581,718,887,674.25/21,136,358.12
  6. Step 6: Final answer
    x = 17,769,462.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.