Home / 20,875,133.16-28,820,280.96-13,644,386.28

Finding the Fourth Proportional to 20,875,133.16, 28,820,280.96 and 13,644,386.28

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Solution

The fourth proportional to 20,875,133.16, 28,820,280.96 and 13,644,386.28 is: 18,837,486.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875,133.16 : 28,820,280.96 = 13,644,386.28 : x
  2. Step 2: Convert to fraction form
    20,875,133.16/28,820,280.96 = 13,644,386.28/x
  3. Step 3: Cross multiply
    20,875,133.16x = 28,820,280.96 × 13,644,386.28
  4. Step 4: Simplify right side
    20,875,133.16x = 393,235,046,116,369.25
  5. Step 5: Solve for x
    x = 393,235,046,116,369.25/20,875,133.16
  6. Step 6: Final answer
    x = 18,837,486.84

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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.