Home / 28,778,683.79-39,716,847.65-16,389,301.46

Finding the Fourth Proportional to 28,778,683.79, 39,716,847.65 and 16,389,301.46

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Solution

The fourth proportional to 28,778,683.79, 39,716,847.65 and 16,389,301.46 is: 22,618,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,778,683.79 : 39,716,847.65 = 16,389,301.46 : x
  2. Step 2: Convert to fraction form
    28,778,683.79/39,716,847.65 = 16,389,301.46/x
  3. Step 3: Cross multiply
    28,778,683.79x = 39,716,847.65 × 16,389,301.46
  4. Step 4: Simplify right side
    28,778,683.79x = 650,931,389,019,131.62
  5. Step 5: Solve for x
    x = 650,931,389,019,131.62/28,778,683.79
  6. Step 6: Final answer
    x = 22,618,525.35

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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.