Home / 20,120,378,421.51-27,765,313,827.14-10,964,712,840

Finding the Fourth Proportional to 20,120,378,421.51, 27,765,313,827.14 and 10,964,712,840

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Solution

The fourth proportional to 20,120,378,421.51, 27,765,313,827.14 and 10,964,712,840 is: 15,130,863,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120,378,421.51 : 27,765,313,827.14 = 10,964,712,840 : x
  2. Step 2: Convert to fraction form
    20,120,378,421.51/27,765,313,827.14 = 10,964,712,840/x
  3. Step 3: Cross multiply
    20,120,378,421.51x = 27,765,313,827.14 × 10,964,712,840
  4. Step 4: Simplify right side
    20,120,378,421.51x = 304,438,693,027,016,671,232
  5. Step 5: Solve for x
    x = 304,438,693,027,016,671,232/20,120,378,421.51
  6. Step 6: Final answer
    x = 15,130,863,180.07

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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.