Home / 21,791,038.60-30,069,407.90-13,417,078.60

Finding the Fourth Proportional to 21,791,038.60, 30,069,407.90 and 13,417,078.60

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Solution

The fourth proportional to 21,791,038.60, 30,069,407.90 and 13,417,078.60 is: 18,514,198.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791,038.60 : 30,069,407.90 = 13,417,078.60 : x
  2. Step 2: Convert to fraction form
    21,791,038.60/30,069,407.90 = 13,417,078.60/x
  3. Step 3: Cross multiply
    21,791,038.60x = 30,069,407.90 × 13,417,078.60
  4. Step 4: Simplify right side
    21,791,038.60x = 403,443,609,249,760.94
  5. Step 5: Solve for x
    x = 403,443,609,249,760.94/21,791,038.60
  6. Step 6: Final answer
    x = 18,514,198.27

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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.