Home / 38,420,690.12-53,020,973.04-21,017,035.52

Finding the Fourth Proportional to 38,420,690.12, 53,020,973.04 and 21,017,035.52

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Solution

The fourth proportional to 38,420,690.12, 53,020,973.04 and 21,017,035.52 is: 29,003,739.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420,690.12 : 53,020,973.04 = 21,017,035.52 : x
  2. Step 2: Convert to fraction form
    38,420,690.12/53,020,973.04 = 21,017,035.52/x
  3. Step 3: Cross multiply
    38,420,690.12x = 53,020,973.04 × 21,017,035.52
  4. Step 4: Simplify right side
    38,420,690.12x = 1,114,343,673,686,642.38
  5. Step 5: Solve for x
    x = 1,114,343,673,686,642.38/38,420,690.12
  6. Step 6: Final answer
    x = 29,003,739.14

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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.