Home / 28,730,739.16-39,649,261.34-15,678,839.12

Finding the Fourth Proportional to 28,730,739.16, 39,649,261.34 and 15,678,839.12

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Solution

The fourth proportional to 28,730,739.16, 39,649,261.34 and 15,678,839.12 is: 21,637,257.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730,739.16 : 39,649,261.34 = 15,678,839.12 : x
  2. Step 2: Convert to fraction form
    28,730,739.16/39,649,261.34 = 15,678,839.12/x
  3. Step 3: Cross multiply
    28,730,739.16x = 39,649,261.34 × 15,678,839.12
  4. Step 4: Simplify right side
    28,730,739.16x = 621,654,389,776,695.62
  5. Step 5: Solve for x
    x = 621,654,389,776,695.62/28,730,739.16
  6. Step 6: Final answer
    x = 21,637,257.10

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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.