Home / 20,111,822.80-30,167,734.20-12,931,464.40

Finding the Fourth Proportional to 20,111,822.80, 30,167,734.20 and 12,931,464.40

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Solution

The fourth proportional to 20,111,822.80, 30,167,734.20 and 12,931,464.40 is: 19,397,196.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,111,822.80 : 30,167,734.20 = 12,931,464.40 : x
  2. Step 2: Convert to fraction form
    20,111,822.80/30,167,734.20 = 12,931,464.40/x
  3. Step 3: Cross multiply
    20,111,822.80x = 30,167,734.20 × 12,931,464.40
  4. Step 4: Simplify right side
    20,111,822.80x = 390,112,980,835,962.50
  5. Step 5: Solve for x
    x = 390,112,980,835,962.50/20,111,822.80
  6. Step 6: Final answer
    x = 19,397,196.60

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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.