Home / 20,776,005.40-31,164,008.10-12,260,421.40

Finding the Fourth Proportional to 20,776,005.40, 31,164,008.10 and 12,260,421.40

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Solution

The fourth proportional to 20,776,005.40, 31,164,008.10 and 12,260,421.40 is: 18,390,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,005.40 : 31,164,008.10 = 12,260,421.40 : x
  2. Step 2: Convert to fraction form
    20,776,005.40/31,164,008.10 = 12,260,421.40/x
  3. Step 3: Cross multiply
    20,776,005.40x = 31,164,008.10 × 12,260,421.40
  4. Step 4: Simplify right side
    20,776,005.40x = 382,083,871,819,013.38
  5. Step 5: Solve for x
    x = 382,083,871,819,013.38/20,776,005.40
  6. Step 6: Final answer
    x = 18,390,632.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.