Home / 28,159,987-38,860,782.10-15,282,931

Finding the Fourth Proportional to 28,159,987, 38,860,782.10 and 15,282,931

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Solution

The fourth proportional to 28,159,987, 38,860,782.10 and 15,282,931 is: 21,090,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,159,987 : 38,860,782.10 = 15,282,931 : x
  2. Step 2: Convert to fraction form
    28,159,987/38,860,782.10 = 15,282,931/x
  3. Step 3: Cross multiply
    28,159,987x = 38,860,782.10 × 15,282,931
  4. Step 4: Simplify right side
    28,159,987x = 593,906,651,440,335.12
  5. Step 5: Solve for x
    x = 593,906,651,440,335.12/28,159,987
  6. Step 6: Final answer
    x = 21,090,444.80

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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.