Home / 28,249,668.48-42,378,719.04-13,105,130.88

Finding the Fourth Proportional to 28,249,668.48, 42,378,719.04 and 13,105,130.88

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Solution

The fourth proportional to 28,249,668.48, 42,378,719.04 and 13,105,130.88 is: 19,659,652.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,249,668.48 : 42,378,719.04 = 13,105,130.88 : x
  2. Step 2: Convert to fraction form
    28,249,668.48/42,378,719.04 = 13,105,130.88/x
  3. Step 3: Cross multiply
    28,249,668.48x = 42,378,719.04 × 13,105,130.88
  4. Step 4: Simplify right side
    28,249,668.48x = 555,378,659,545,948
  5. Step 5: Solve for x
    x = 555,378,659,545,948/28,249,668.48
  6. Step 6: Final answer
    x = 19,659,652.29

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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.