Home / 21,789,421.40-30,069,038.19-12,000,776.39

Finding the Fourth Proportional to 21,789,421.40, 30,069,038.19 and 12,000,776.39

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Solution

The fourth proportional to 21,789,421.40, 30,069,038.19 and 12,000,776.39 is: 16,560,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789,421.40 : 30,069,038.19 = 12,000,776.39 : x
  2. Step 2: Convert to fraction form
    21,789,421.40/30,069,038.19 = 12,000,776.39/x
  3. Step 3: Cross multiply
    21,789,421.40x = 30,069,038.19 × 12,000,776.39
  4. Step 4: Simplify right side
    21,789,421.40x = 360,851,803,580,560.38
  5. Step 5: Solve for x
    x = 360,851,803,580,560.38/21,789,421.40
  6. Step 6: Final answer
    x = 16,560,871.30

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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.