Home / 20,730,130.60-31,095,195.90-18,338,646.10

Finding the Fourth Proportional to 20,730,130.60, 31,095,195.90 and 18,338,646.10

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Solution

The fourth proportional to 20,730,130.60, 31,095,195.90 and 18,338,646.10 is: 27,507,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,130.60 : 31,095,195.90 = 18,338,646.10 : x
  2. Step 2: Convert to fraction form
    20,730,130.60/31,095,195.90 = 18,338,646.10/x
  3. Step 3: Cross multiply
    20,730,130.60x = 31,095,195.90 × 18,338,646.10
  4. Step 4: Simplify right side
    20,730,130.60x = 570,243,793,020,271
  5. Step 5: Solve for x
    x = 570,243,793,020,271/20,730,130.60
  6. Step 6: Final answer
    x = 27,507,969.15

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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.