Home / 13,260,666.80-18,288,802.68-7,822,910

Finding the Fourth Proportional to 13,260,666.80, 18,288,802.68 and 7,822,910

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Solution

The fourth proportional to 13,260,666.80, 18,288,802.68 and 7,822,910 is: 10,789,175.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,260,666.80 : 18,288,802.68 = 7,822,910 : x
  2. Step 2: Convert to fraction form
    13,260,666.80/18,288,802.68 = 7,822,910/x
  3. Step 3: Cross multiply
    13,260,666.80x = 18,288,802.68 × 7,822,910
  4. Step 4: Simplify right side
    13,260,666.80x = 143,071,657,373,398.81
  5. Step 5: Solve for x
    x = 143,071,657,373,398.81/13,260,666.80
  6. Step 6: Final answer
    x = 10,789,175.20

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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.