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Finding the Third Proportional to 15,549,711 and 21,434,970

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Solution

The third proportional to 15,549,711 and 21,434,970 is: 29,547,683.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549,711 : 21,434,970 = 21,434,970 : x
  2. Step 2: Convert to fraction form
    15,549,711/21,434,970 = 21,434,970/x
  3. Step 3: Cross multiply
    15,549,711x = 21,434,970 × 21,434,970
  4. Step 4: Simplify right side
    15,549,711x = 459,457,938,900,900
  5. Step 5: Solve for x
    x = 459,457,938,900,900/15,549,711
  6. Step 6: Final answer
    x = 29,547,683.48

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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.