Home / 38,420,689.32-53,020,971.93-21,017,034.72

Finding the Fourth Proportional to 38,420,689.32, 53,020,971.93 and 21,017,034.72

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Solution

The fourth proportional to 38,420,689.32, 53,020,971.93 and 21,017,034.72 is: 29,003,738.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420,689.32 : 53,020,971.93 = 21,017,034.72 : x
  2. Step 2: Convert to fraction form
    38,420,689.32/53,020,971.93 = 21,017,034.72/x
  3. Step 3: Cross multiply
    38,420,689.32x = 53,020,971.93 × 21,017,034.72
  4. Step 4: Simplify right side
    38,420,689.32x = 1,114,343,607,940,955.38
  5. Step 5: Solve for x
    x = 1,114,343,607,940,955.38/38,420,689.32
  6. Step 6: Final answer
    x = 29,003,738.03

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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.