Home / 28,688,496-39,588,969.60-15,635,473.98

Finding the Fourth Proportional to 28,688,496, 39,588,969.60 and 15,635,473.98

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Solution

The fourth proportional to 28,688,496, 39,588,969.60 and 15,635,473.98 is: 21,576,324.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,688,496 : 39,588,969.60 = 15,635,473.98 : x
  2. Step 2: Convert to fraction form
    28,688,496/39,588,969.60 = 15,635,473.98/x
  3. Step 3: Cross multiply
    28,688,496x = 39,588,969.60 × 15,635,473.98
  4. Step 4: Simplify right side
    28,688,496x = 618,992,304,075,811
  5. Step 5: Solve for x
    x = 618,992,304,075,811/28,688,496
  6. Step 6: Final answer
    x = 21,576,324.67

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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.