Home / 21,009,459.92-28,995,283.72-12,314,937.56

Finding the Fourth Proportional to 21,009,459.92, 28,995,283.72 and 12,314,937.56

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Solution

The fourth proportional to 21,009,459.92, 28,995,283.72 and 12,314,937.56 is: 16,995,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009,459.92 : 28,995,283.72 = 12,314,937.56 : x
  2. Step 2: Convert to fraction form
    21,009,459.92/28,995,283.72 = 12,314,937.56/x
  3. Step 3: Cross multiply
    21,009,459.92x = 28,995,283.72 × 12,314,937.56
  4. Step 4: Simplify right side
    21,009,459.92x = 357,075,108,546,284.50
  5. Step 5: Solve for x
    x = 357,075,108,546,284.50/21,009,459.92
  6. Step 6: Final answer
    x = 16,995,920.40

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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.